Today I cooked a really nice shepherd's pie (FODMAP style as I am on day 14 of this). It was just minced beef, stock and mashed potato. To make it tastier I used a stock cube that said on the packet it was gluten free. When I was cooking I tasted the meat (a couple of teaspoons) and 1 1/2 - 2 hours later I felt ill (still do 6 hours later). I was not sure why as I hadn't eaten anything dodgy on this FODMAP. I checked the ingredients on the stock cube and it contains glucose syrup. So I didn't eat the dinner but my family did. What is in glucose syrup that makes me ill? I am really sorry to ask this question again. Someone answered this for me before, I think it might have been Jerry so I have tried to find the answer on previous posts but been unsuccessful. I am monitoring my food intake and symptoms for the dietician so it is important to identify the dodgy stuff.