For food, it all depends on where I'm touring. I adjust to local conditions. In SE Asia, delicious and very inexpensive prepared food & drink is available all over, and any perishable items very quickly rot, so I buy all of my meals from street vendors, restaurants, or in "night markets". It's cheaper than preparing meals yourself. Don't even try to stick to a western diet. The local food there is one of the joys of touring in SE Asia, especially in a country like Thailand.

In a place like Mexico, the markets in larger towns have stalls that prepare food and have places to sit. They're great for breakfast & lunch. There is also good street food in many places. Fast, delicious, and inexpensive. Much of Latin America is similar, but the food is tastier and more interesting in Mexico!

In the USA, Canada, and most of the English-speaking world, I'm more likely to eat things I pick up in a grocery store or, if I'm lucky, a bakery. For dinner, it will either be a restaurant or a picnic dinner I put together from a grocery store, as I did for lunch. I gave away my stove years ago. I love to cook but don't enjoy doing it on a camping stove.

In Europe, I'll get something in a bakery for breakfast, grocery shop for a picnic lunch, and usually eat dinner in a restaurant. Spain is an exception because the restaurant hours and bakery hours there generally aren't conducive to bike touring. I devised a different routine for Spain.