Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      Tablespoon    butter
   1                    garlic clove -- crushed (or more to
                        -- taste)
   2                    shallots -- diced finely
     1/4  Pint          warm water
   2      Tablespoons   soy sauce
   5      Tablespoons   smooth peanut butter
   1      Teaspoon      grated ginger
                        hot chili sauce -- to taste

Preparation:

Melt the butter in a saucepan and add the shallots and garlic. Cook until soft, but not brown. Pour in the water, soy sauce, peanut butter and ginger. Bring to a boil and season with hot chili sauce. Simmer until desired thickness is reached. I like three cloves of garlic in this myself, and probably a couple tablespoons of chili sauce (enough to make it noticeable :). It gets reasonably thick in 5-10 minutes, and can sit happily for a while after, and reheats nicely the next day in the microwave.