I recently discovered Yumly, a plattform for sharing and tagging recipes. One particular recipe caught my eye because it is short and sweet or rather sweet & sour. It was a recipe for “the best sweet and sour sauce”. It simply combines 1 cup pineapple juice, 1/3 cup water, 3 tablespoons rice vinegar, 1 tablespoon soy sauce and 1/2 cup brown sugar (and cornstarch to bind it).
I started off by frying diced onion in sesame oil and adding the brown sugar for some caramelizing effect.