Toasted & Dissolved Eggshells (Water Soluble Calcium). Calcium transfers accumulated carbohydrates into sugars and aids in the formation of fruits and seeds making fruits sweeter and skins more flexible.
Remove membrane from eggshells. Crush to ~3mm. Toast on heat just below smoking for 15-20 minutes until slightly brown. Mix 1 part eggshells with 10 parts vinegar by weight. Stir daily for 7 days. Filter when no vinegar taste.