when you have the iron gut perk, it will feel like you have too much food.
Reducing the chance to get food poisoning by 25/50/75/100% (food poison % drops from 4 to 3 to 2 to 1 to 0 fir the vast majority of cooked food) basically multiplies all your food by that amount. You get sick FAR less, and recovering from sick is far safer. I've had plenty of times without the perk where I had a surplus of meat, cooked into grilled meat...I'd get sick, down to 30 hunger, then start eating the meat to recover. 1,2,3,4,5, sick....start all over. Dropping 25 grilled meat only to end up slightly hungrier than when you started.
Additionally, the perk makes hunger last longer. So now in addition to getting sick less often (and avoiding the wastage that comes with that), you also stay full longer.
It's no wonder you're swimming in food when perked into iron gut. In all of my endurance playthroughs, I was as well. I feel like you might run into a less overwhelming surplus of food without the perk...maybe not desperate need (planning ahead can solve most issues), but not "full chest of meat/veg" surplus
I'm currently playing a per/int build and my stockpiles are....dangerous. I HAVE meat, but no points in iron gut or master chef. I have the grilled meat recipe, but as I mentioned above, that's a risky proposition. one food poisoning means I need to eat around 10-12 meat to top off...that's 10-12 4% chances. That's a 34-39% chance I'll get sick again and start all over. I go through all the canned food I find as I find it, and even occasionally spluge on some canned food at the trader to top off.
Two changes I'd like to see are
1) make iron gut 5 do something. it's the capstone level of that perk and it does almost NOTHING. All worthwhile cooked food has 4% food poisoning chance, which iron gut 4 eliminates. Iron gut 5 should have some other big effect...maybe +100% food buff duration instead of +50%, or maybe reduce food poisoning chance to 0% on ANY food.
2) move living off the land. I'm honestly not sure where. It feels like it makes SENSE in endurance, which is the "self-sufficient" tree (I'd love to see the attributes renamed Scout, Brute, Survivalist, Ninja, and Engineer instead of Per, Str, End, Agi, and Int), but it conflicts with iron gut....living off the land gives you all the food you could ever need, and iron gut makes you not need excessive food. It feels like one of them should be moved to a new tree just so that the food/survival skills are spread around like many of the other playstyle options (maybe swap iron gut to STR and rename it "Mighty Metabolism" and move Master Chef to Endurance to complement the farming?)