Get some dehydrated refritos, a plastic container like an old peanut butter jar, taco seasoning and chips. You can add cold water, shake it up and then eat it in like 15 mins. Mashed potatoes and anything you can think to add in (like fried onions) also works well. Oatmeal (quick oats) can also be made cold on the road. Getting nuts and such from the bulk food idea can be good, they seem expensive at first, but it's a lot of calories and wont go bad.
As for your original question about rice it actually does cause food poisoning more often than people think from not reheating it :( I don't think the rice is worth the effort just get some cheap chips and eat the beans with those. You can also add some oil for more cheap calories, but don't overdo it (no more than like an oz per meal).
Get some dehydrated refritos, a plastic container like an old peanut butter jar, taco seasoning and chips. You can add cold water, shake it up and then eat it in like 15 mins. Mashed potatoes and anything you can think to add in (like fried onions) also works well. Oatmeal (quick oats) can also be made cold on the road. Getting nuts and such from the bulk food idea can be good, they seem expensive at first, but it's a lot of calories and wont go bad.
As for your original question about rice it actually does cause food poisoning more often than people think from not reheating it :( I don't think the rice is worth the effort just get some cheap chips and eat the beans with those. You can also add some oil for more cheap calories, but don't overdo it (no more than like an oz per meal).