Niaje shally, maybe the best way is not to start selling something new, have you thought of improvising what you sell? Unacheki vile unauza sambusa na kahawa, what about turning it into something different? unaeza uza chapo+sambusa(kismocha style) or even introduce hotdogs and sell them tuseme kes 50 bob, I mean it's relatively cheap na bado unaenda profit at a fair rate💁‍♂️ good thing about kitu kama hio ni it isn't affected by weather like the idea ya cold mala. I mean bado kahawa baridi huslap. Ever tried saying unauza kahawa baridi and see how many will buy? Give it a shot.