On that note, sriracha sauce on ice cream is pretty good. Add some salt for more enhancement.

I haven't gone too crazy with it, but dropping my ideas of what foods do and don't go in main courses or desserts has improved both of them for me. Sausage and savory chocolate sauce is great, and apples are a lot like potatoes when cooked in a savory dish, while doing the same sweet/sour/salty/umami balancing for desserts makes them better (note that that doesn't mean to make them all equal, dessert will still be sweet overall, just if you add representation for all the flavour groups other than bitter, it'll usually enhance the taste).