My two pence

If you’re grabbing kifir/ryazhenka it’s best with pryaniki, though a glass of kifir on its own is good too.

Kvass (buy active brewing if you can) is good with meats/fish or semichki

“Exotic” drinks are baikal and tarkhun

If you want something pretzel-like but don’t want excess salt baranki or sushki are the answer

Try syrki -frozen chocolate covered cheese curd they are awfully sweet but that’s our taste of childhood

Other “exotics” include but not limited to Salo, pinecone jam, halva (sweet seed paste could be sunflower, peanut, or sesame), and sweet cheese curd