Recommendation: Gado gado sauce from Indonesian (and some Malaysian) supermarket. Comes as a small square/rectangular brown block. Might be called gado gado salad dressing, bumbu kacang, sometimes sambel pecel. It's a block of pre-cooked peanut/satay style sauce that you add to some hot water, stir, and serve. Fragrant, hints of lime, good for unexpected vegan guests.

Delicious! Well worth having in the cupboard, keeps for a ~year. "Pedas" is spicy (ie. hot chilli), "tidak pedas" is not spicy, and "sedang" is medium (in that context anyway). Common export brands are Karangsari and Enak eco.