>>368 (OP)
first u gotta nail down the 3 macros: fat, protein and carbs. if you can get quality raw dairy, then drinking large helpings of that would have you set, but modern zogmilk is unfortunately what most people have access to
when it comes to cheap and healthy carbs, potatoes and rice are easily digestible. if you can, try getting cheap fruits try to make them into marmalade to add to their carb content with sugar.
as for protein, eggs are the cheapst source but dont actually eat too many as you could end up ingesting too much PUFA. again dairy is a GOATed source of macroes, cottage cheese can be a particularly lean source. focus on lean cuts of chicken or pork since their fat content is too unsaturated. beef is pricier but the fat content is better, if youre going to eat it, have coffee or calcium alongside it to counteract the iron
finally for fat, only buy and use butter, or coconut oil if you can. buying unsaturated oils is paying to get poisoned by jews