With unhealthy foods, what do you call 'moderation'?

[HedgeRowsCircle]

Say you eat a pretty healthy diet generally, yet sometimes want a bacon sandwich or a pot of ice cream, or a plate of frites with mayo.

I'm really curious how people interpret moderation, since I wonder if we all do this differently!

Once per week, or twice, or once per month?

Personally, I have my own way of doing it that works well for me, but I have never seen an actual, practical method, so am curious.

1/3 big bag of Tyrells crisps in the evening😁(it's my weakness!)
I eat reasonably well... museli or boiled egg and toast for breakfast, rarely eat lunch but grab an apple while walking the dog and other bits of fruit, decent dinner (veggie) ...but often 1/3 of a big bag of crisps in the evening. I don't eat cake, drink, or have much chocolate (do like sweets tho) and it must balance out as my BMI is 20.6 and has been since I was 22...I'm 58.

I do plaq squash 3 x a week, walk the dog and have an allotment tho which probably helps balance the crisps! We have a takeaway roughly once a fortnight but usually save half for the next day.

Sounds good!
I eat pretty much home made from scratch but enjoy one bag of shitty packet noodles per week and a bacon butty every two. Actual real sugary milk chocolate - none of this dark choc one square shit - every weekend. For some godforsaken reason this works for me and i dont crave anything else.

When they make up no more than 10-15% of my diet. So if I go out for dinner twice in one week, I would feel ‘unhealthy’ if I didn’t regulate afterwards with a few days of only clean eating.

Obviously there are exceptions, like Christmas and holidays, but overall this level of moderation works for me.

I read the 80/20 rule somewhere which sounds reasonable. I'm not entirely sure whether that refers to meals, total intake, calories etc but in practice I have probably 5 or 6 healthy meals in between each treat or less healthy meal.

which, apparently, makes around 1.5 days per week free for crap foods

I was hoping it might be 3.