This is a versatile sauce.  It's really good as a salad dressing for lettuce, spinach, or other greens with carrots and cucumbers.  It's good on tofu, room-temperature or hot, over salad or noodles (try buckwheat soba noodles) or rice.

Take a blob of peanut butter—I never measure because it's too hard to get it off the measuring spoon, but I use about 1 Tbsp. per person—and melt it, either in a small pot over low heat or in a bowl in the microwave.

Add a good slosh of soy sauce, a good slosh of apple cider vinegar or lime juice, and a small blob of honey.

Sprinkle heavily with cayenne pepper, garlic powder, and ginger.

Mix thoroughly. It will look weird and curdled, but if you keep mixing you'll get a uniform paste. Taste it and adjust seasoning to your liking.

Mix in water or fruit juice (apple, orange, pineapple are all good but have different effects on the overall flavor) until it reaches a pourable consistency.