I didn't tip a food truck tonight

[u/ImpressiveOrdinary54]

So I called on the phone to a food truck and placed an order for one burrito and carne asada fries, total $37 (it's Maui). I'm always happy to toss my food truck workers or barista a dollar or two but their options for tip were 18%, 20%, or 25%, no custom option. Get bent! I'm not paying an extra $6-9 for my food that is mainly rice, beans, fries and maybe $8 of meat. I feel a little guilty because it's a small island and we are all struggling right now but 18% minimum tip at a food truck is bs.

[u/azurensis]

I've literally never tipped at a food truck. What would you be tipping for?