In this permaculture gardening video I show you how to make water soluble calcium rich fertilizer using eggshells and vinegar. Eggshells are difficult to compost since they take a long time to break down. Using acetic acid or vinegar helps speed up the decomposition process and the chemical reaction releases the calcium in water soluble form that plants can use. Calcium is an essential nutrient that plants need to make foliage, cell walls, and fruit. Using this method to return nutrients back to the soil is just one of the ways we are using to be zero waste and reduce our waste footprint.