Brussels sprouts with pancetta are so much more appealing than boiled Brussels sprouts.
Tomato Paste is boiled & strained tomato puree that is further cooked to reduce the water content in it making it thick & rich concentrate.
I think the rhubarb-fig sugar-free jam is the first jam I have ever boiled, except of course for applesauce, which could also be considered as jam.
Sweet corn paired with potatoes and crème fraîche, onions, and spices, all boiled up with chicken soup, and you have a wonderful dinner on a cold fall or winter evening.
A tasty French potato salad with boiled eggs, anchovies (or tuna), tomatoes and some crunchy greens.