I don't seem to see a command to stop eating and drinking. What I have found so far is that the only way I can stop using the good stuff is to have some rubbish to switch to.
Really you need the good stuff for a fairly small proportion of the time. Foods seem to have much longer durations than drinks but then I've never had a problem with the speed of health regen even on simple rations. Power is the biggie and you need a way to turn off consumption during travelling, shopping, tradering, pretty much everything apart from either tradeskilling or on-the-spot exping.
I'm interested to hear the difference between different tiers of recipe. Does this mean that two drinks which say "Satiety:- High, Duration 1 hour" can actually be different? If so then the much-vaunted labelling of food and drink was a farago. Our TSA or your FDA would rip them a new one.
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Wherever I go - there I am.