This is how I made it: I peeled the green exterior off of the rinds and chopped them into 1 " or so squares.
Next, I pureed the rest of the ingredients, except for the whey, in the food processor. The recipe is below. I mixed the watermelon, other ingredients and the whey together into a large glass jar and let ferment for 3 days, after which it is stored in the fridge. My bf couldn't believe this tasty relish was made with watermelon rinds!
My boyfriend likes peanut butter; I like the glass jars. I make him buy the big ones. I don't like plastic containers with their BPA and dioxins if you freeze or heat them, I do not like them one little bit.
3 1/2 cups water melon rind, peeled and chopped into @ 1" pieces
1/2 red pepper
1 medium onion
2 tbsp. sea salt
1 clove garlic
1 tsp. mustard seed
1 tsp. turmeric
1 small hot pepper (optional)
4 tbsp. whey