I suspect that the primary ingredients are Vietnamese Sweet and Sour Chili Sauce or one of the many, many similar Asian sweet hot sauces and canned coconut milk. For more heat and less sweetness consider sriracha. You could combine those two chili sauces to whatever levels of hotness and sweetnes...

This is strange. I've never made waffles before, but that pancake recipe is almost exactly the one I use, except for the baking powder. If it goes dark soon after preparing the mix, it is most likely a chemical reaction between two or more of the ingredients. It should still be perfectly safe to ...