One of the best recipes for peanut sauce I have tried! This goes great with grilled meats, especially on grilled chicken skewers, on noodles, even used as a salad dressing for spinach salad!. You won't be able to keep your spoon out of the jar, it is that good LOL! This peanut sauce is of a thinner consistency, if you want a thicker sauce, then add in more peanut butter and reduce the water just slightly. This can be made up to 3 days in advance. Kikkoman Thai-Style chili sauce can be found in any Asian section of major grocery stores, I purchase mine at Safeway stores in the Asian section, but you can use any brand of Thai chili sauce for this. You can use about 1/2 - 1 teaspoon (or to taste) red pepper flakes in place of the chili sauce. This recipe may be cut in half to make 2 cups.