Try a spicy peanut sauce, if the Thai sweet chili sauce didn't work for you.

One really easy thing to do is to make a Thai flavored aioli by mixing together mayo, minced garlic and Thai curry paste (green or red) to taste. You could also go with tangy lime flavor - mayo or yogurt mixed with garlic, a squirt of lime juice, some lime zest, some minced ginger if you like. Though they aren't in season, you could even mix in some diced cucumbers for a very refreshing sauce. Those are just the thoughts off the top of my head.

two other possibilities to try: hoisin sauce, or sriracha mayo (a couple of tablespoons of mayo with sriracha to taste and a drop of sesame oil)

I do the sriracha mayo for burgers with an asian flare. Mainly because my wife loves it. But, so do many others I have served this to at my home.

I want to mix up a batch of this and eat it right now, fiveandspice!