Your favorite fruit for Pepper Sauce?

In my culture, pepper sauce is just basic and Hot. Pretty much ground up peppers, vinegar, salt. Maybe a little lime, garlic, a piece of grated carrot and culantro/chadon beni. It can be refrigerated forever.

I've seen posts here for fruity/hot pepper sauces and they sound really tasty!

What is your favorite fruit to use? Pineapple, peach, mango. Are there others? Do you stick to one or use a combination of different fruits? How long can it be refrigerated?

Recipe/links always appreciated