---
product_id: 600150662
title: "PURE ORIGINAL INGREDIENTS Calcium Sulfate (Gypsum) (4 oz.) by Eco-Friendly Packaging, for Multiple Uses Including Baking, Water Treatment, Gardening"
brand: "pure original ingredients"
price: "$39.76"
currency: USD
in_stock: true
reviews_count: 5
category: "Pure Original Ingredients"
url: https://www.desertcart.us/products/600150662-pure-original-ingredients-calcium-sulfate-gypsum-4-oz-by-eco
store_origin: US
region: United States of America
---

# Vegan & pH neutral Multi-use: baking, brewing, gardening 23% Calcium content PURE ORIGINAL INGREDIENTS Calcium Sulfate (Gypsum) (4 oz.) by Eco-Friendly Packaging, for Multiple Uses Including Baking, Water Treatment, Gardening

**Brand:** pure original ingredients
**Price:** $39.76
**Availability:** ✅ In Stock

## Summary

> 🌟 Elevate Every Recipe & Garden with Pure Calcium Power!

## Quick Answers

- **What is this?** PURE ORIGINAL INGREDIENTS Calcium Sulfate (Gypsum) (4 oz.) by Eco-Friendly Packaging, for Multiple Uses Including Baking, Water Treatment, Gardening by pure original ingredients
- **How much does it cost?** $39.76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/600150662-pure-original-ingredients-calcium-sulfate-gypsum-4-oz-by-eco)

## Best For

- pure original ingredients enthusiasts

## Why This Product

- Trusted pure original ingredients brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Garden Powerhouse:** Enhance soil health, improve water retention, and combat blossom end rot for thriving plants.
- • **Pure Food-Grade Quality:** Guaranteed additive & preservative-free for clean, safe use in all your culinary and gardening needs.
- • **Satisfaction Guaranteed:** Confidently backed by a 100% money-back guarantee—because quality and your satisfaction come first.
- • **Water Hardness Enhancer:** Easily adjust water hardness with precise dosing to perfect your recipes and brewing process.
- • **Versatile Culinary Essential:** Elevate your baking, brewing, wine-making, pickling, and tofu-making with a trusted calcium boost.

## Overview

PURE ORIGINAL INGREDIENTS Calcium Sulfate (Gypsum) is a premium, food-grade, vegan powder containing 23% calcium and 19% sulfur. Perfectly pH neutral and free from additives, it’s designed for versatile use in baking, brewing, wine-making, pickling, tofu production, water treatment, and soil enrichment. Trusted by professionals and hobbyists alike, it boosts culinary creations and garden vitality with guaranteed satisfaction.

## Description

Pure Calcium Sulfate (Gypsum) is Food Grade Powder for Calcium Enrichment, Brewing, Adding Hardness to Soft or Distilled Water, Making Tofu, & More! PURE CALCIUM SULFATE: i. Preservative & Additive Free ii. Contains 23% Calcium iii. Food Grade iv. pH Neutral v. Vegan Applications: Great for baking, brewing, wine-making, pickling, and tofu-making. Can be added to water to increase hardness. Use in the garden to increase calcium and sulfur levels in soil, increase soil's water retention, to treat blossom end rot, or to make mushroom spawn. Use in building to make plasters, molds, and casts. Recommended Use: Food Production: Use according to desired recipe. Water Treatment: Add 1 tsp of calcium sulfate for every 5 gallons of water. Soil Treatment: Sprinkle on soil by hand or using a spreader then water. Use up to 10 lbs. per 1000 sq. feet. Repeat twice yearly. Blossom End Rot Treatment: Mix 4 level tbsp per gallon of water and spray plant with solution. Apply 2 to 3 times per week. Mushroom Spawn: Use according to directions for desired mushroom spawn. Ingredients: Pure Calcium Sulfate (CaSO4) Contains 23% calcium and 19% sulfur.

Review: Worked like a charm. - It worked like a charm without baking the calcium. It made medium texture tofu. I don't have a press otherwise I could have made it to firm. Here is the recipe I used. 1. Soak Soybeans: Soak 200 gram soybeans the night before. 2. Prepare Soybeans: The next day, discard the soaking water. Use 1.5 liters of clean water to grind the soybeans. 3. Boil Soybeans: Boil the pulsed soybeans for 20 minutes, then strain the pulp out using a cheesecloth. 4. Warm the Soy Milk: Place the strained soy milk back into a pot and warm it up to 120-130°F (49-54°C). 5. Prepare Calcium Solution: In a separate container, dissolve 1.5 tsp of calcium in 1/4 cup of room temperature water (around 70-75°F or 21-24°C). 6. Add Calcium to Soy Milk: Stir the calcium solution into the warm soy milk and mix once. 7. Let Sit: Allow the mixture to sit undisturbed for 20 minutes. 8. Strain Again: After 20 minutes, strain the soy milk again and place it into a soy milk form or container.
Review: No success with silken tofu - Does curdle my homemade soy milk (one extraction, using an old Joyoung soymilk maker) but I have not yet found a formula for silken tofu. I have tried adding the product after the soymilk has cooled to ~80C, steaming the soymilk mixture, and streaming the soymilk into a mixture of calcium carbonate and warm water then letting it rest totally undisturbed, all without success. Have also tried different amounts of calcium carbonate, within 1-4 tsp per liter without success. The soymilk curds do press nicely into old tofu. I strain the curds with a fine, thin dishcloth from IKEA in a bowl (too lazy to get the tofu press), drain the water periodically, and press with another bowl on top.

## Features

- Food Grade Pure Calcium Sulfate.
- Vegan.
- Great for baking, making wine, scooping and making tofu.
- Treats soil and garden plants.
- Money Back Guarantee: We are confident that you will love our products and stand behind all items with a 100% satisfaction guarantee. If you are not satisfied with your purchase, return the item for a full refund.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07G8QDYP2 |
| Best Sellers Rank | #62,560 in Health ( See Top 100 in Health ) #1,237 in Mineral Supplements |
| Brand | PURE ORIGINAL INGREDIENTS |
| Brand Name | PURE ORIGINAL INGREDIENTS |
| Customer Reviews | 4.7 out of 5 stars 644 Reviews |
| Diet Type | Vegan |
| Flavor | Unflavored |
| Flavour | Unflavored |
| Global Trade Identification Number | 00195507122956 |
| Item Form | Powder |
| Item Weight | 4 Ounces |
| Item form | Powder |
| Manufacturer | Pure Organic Ingredients |
| Manufacturer Part Number | 1 |
| Number of Items | 1 |
| Primary Supplement Type | Calcium |
| Primary supplement type | Calcium |
| UPC | 195507122956 |
| Unit Count | 113.4 Grams |
| Unit count | 113.4 Grams |

## Product Details

- **Brand:** PURE ORIGINAL INGREDIENTS
- **Flavour:** Unflavored
- **Item form:** Powder
- **Primary supplement type:** Calcium
- **Unit count:** 113.4 Grams

## Images

![PURE ORIGINAL INGREDIENTS Calcium Sulfate (Gypsum) (4 oz.) by Eco-Friendly Packaging, for Multiple Uses Including Baking, Water Treatment, Gardening - Image 1](https://m.media-amazon.com/images/I/71uWXPHSMFL.jpg)
![PURE ORIGINAL INGREDIENTS Calcium Sulfate (Gypsum) (4 oz.) by Eco-Friendly Packaging, for Multiple Uses Including Baking, Water Treatment, Gardening - Image 2](https://m.media-amazon.com/images/I/71B-mmlMolL.jpg)
![PURE ORIGINAL INGREDIENTS Calcium Sulfate (Gypsum) (4 oz.) by Eco-Friendly Packaging, for Multiple Uses Including Baking, Water Treatment, Gardening - Image 3](https://m.media-amazon.com/images/I/31iAI2OT7KL.jpg)

## Questions & Answers

**Q: How do you apply to garden?**
A: For Soil Treatment: Sprinkle on soil by hand or using a spreader then water. Use up to 10 lbs. per 1000 sq. feet. Repeat twice yearly. 
For Blossom End Rot Treatment: Mix 4 level tablespoons per gallon of water and spray plant with solution. Apply 2 to 3 times per week.

**Q: Do you have laboratory testing data on this calcium sulfate? For each lot? This stuff is mined, so what are the lead, arsenic, etc levels?**
A: At Pure Organic Ingredients, we test our calcium sulfate to ensure purity. If you would like a copy of the certificate of analysis, please contact us via the Amazon Orders panel, where buyers can “Ask a question” and we will be happy to provide you with one.

**Q: What is the percent of Calcium and of sulfur for this product?**
A: its 1 to 1 ratio

**Q: Is this powder bright white, or is it off-white or beige?**
A: off white to a very light beige

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked like a charm.
*by Z***I on 30 March 2025*

It worked like a charm without baking the calcium. It made medium texture tofu. I don't have a press otherwise I could have made it to firm. Here is the recipe I used. 1. Soak Soybeans: Soak 200 gram soybeans the night before. 2. Prepare Soybeans: The next day, discard the soaking water. Use 1.5 liters of clean water to grind the soybeans. 3. Boil Soybeans: Boil the pulsed soybeans for 20 minutes, then strain the pulp out using a cheesecloth. 4. Warm the Soy Milk: Place the strained soy milk back into a pot and warm it up to 120-130°F (49-54°C). 5. Prepare Calcium Solution: In a separate container, dissolve 1.5 tsp of calcium in 1/4 cup of room temperature water (around 70-75°F or 21-24°C). 6. Add Calcium to Soy Milk: Stir the calcium solution into the warm soy milk and mix once. 7. Let Sit: Allow the mixture to sit undisturbed for 20 minutes. 8. Strain Again: After 20 minutes, strain the soy milk again and place it into a soy milk form or container.

### ⭐⭐⭐⭐ No success with silken tofu
*by L***H on 14 October 2022*

Does curdle my homemade soy milk (one extraction, using an old Joyoung soymilk maker) but I have not yet found a formula for silken tofu. I have tried adding the product after the soymilk has cooled to ~80C, steaming the soymilk mixture, and streaming the soymilk into a mixture of calcium carbonate and warm water then letting it rest totally undisturbed, all without success. Have also tried different amounts of calcium carbonate, within 1-4 tsp per liter without success. The soymilk curds do press nicely into old tofu. I strain the curds with a fine, thin dishcloth from IKEA in a bowl (too lazy to get the tofu press), drain the water periodically, and press with another bowl on top.

### ⭐⭐⭐⭐⭐ Excellent Coagulant for Making Tofu
*by B***M on 5 August 2022*

This product works great as a coagulant for making tofu provided you follow the recipe's instructions. There is no detectable aftertaste. The only drawback is the price. I bought the smallest quantity to test it so naturally the cost per unit is much higher. However, it is worth the cost to have freshly made tofu, which is superior to the store-bought stuff.

## Frequently Bought Together

- Pure Original Ingredients Calcium Sulfate (4 oz) Baking, Water Treatment & Gardening
- Pure Original Ingredients Epsom Salt (1 lb) Pure Magnesium Sulfate, Soaking Solution
- Pure Original Ingredients Calcium Chloride (4 oz) Food Safe, For Wine Making, Home Brew, & Cheese Making

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-11-13*