I find it difficult to have a good vegan breakfast if you’re not near a supermarket or hotel. My solution in the past. As a vegetarian, always been Starbucks or similar for a sandwich and tea w/soymilk – but as a vegan is not so much. I nut bar that may or may not contain eggwhite was all on display for me. At Dublin airport I found heaven with beans on toast as well as oat porrige made on water. Another breakfast is fruits with fruits. It’s good for a start but eventually you need more…