I love to eat. I’m a little picky, I don’t like mushrooms or bugs. Road side stands are some of my favourite places to get some grub. They tend to be cheap and they tend to have local delicacies. In Thailand it was curry from a bag all the time. Literally from a big pot into a plastic bag, it was so spicy and so good and so, so cheap. You could get a side of rice or some fresh fruit.
Farmers Markets are a good place to get good, fresh foods to eat. I like to buy a bit of fruit and other things I won’t need to cook or refrigerate. These are great snacks as you travel and can help the cost of eating out for every meal.
In Japan it was Ramen shops or Gyudon, meals you can have for about 5$ or less.
When you travel you can find staples from home McDonald’s, which is usually cheap, Pizza Hut, which is usually more expensive. But fast food in this style isn’t great for you if you eat it for every meal. The best way to find somewhere good to eat is to look in the window and see how many locals are there. The more locals the better the food and likely an inexpensive restaurant.
If your looking at hotels and hostels look at which ones include breakfast. Most will have bread and cheese and meats. The perfect thing to make to take along as a mid-afternoon snack if your really looking to cut back your spending.
Bring a water bottle with a filter and you can fill up for free almost anywhere. Be sure to check water advisories for the region, or ask at the hotel if the tap water is safe to drink. You don’t want to fill up with water that could make you sick.