It is permitted for muslims to eat kosher so what’s the problem? I’m muslim and I’d have no problem eating Kosher. If you’re in doubt say bismillah over it before eating it. However avoid fast food by non muslim companies as there’s no way of knowing who carried out the slaughter.

“Made lawful to you this day are At‑Tayyibaat [all kinds of Halaal (lawful) foods, which Allaah has made lawful (meat of slaughtered eatable animals, milk products, fats, vegetables and fruits)]. The food (slaughtered cattle, eatable animals) of the people of the Scripture (Jews and Christians) is lawful to you and yours is lawful to them” [Quran: al-Maa’idah 5:5]

@ VRG – A few months ago, I contacted Wrigley’s wanting to know if they were suitable for vegetarians. I was told that they aren’t, and the reason was because they contain the red colouring derived from beetles. It’s 3.34 am and I’m having difficulty recalling the name of that ingredients. I asked if it was only in the red coloured skittles, but the rep said he couldn’t confirm that and that it was best to avoid them. The good news is that he said they were looking to make Skittles suitable for vegetarians.