Not right now, it’s just a single slot and you get to pick what buff you put in it.
But I think that “well fed” being clobbered by the more mandatory buffs is an unfortunate oversight. Probably, Well Fed effect should just represent that you have a food buff, where the Well Fed buff itself should be granted by foods that give no alternate benefits.
Yeah the devs were pretty adamant not long ago that they do not want food buffs to stack for some reason. They want you to weigh the pros and cons of your food buff choice before deciding to only ever eat persisting pies.
Res brew seems to have own slot, would be nice if luminous and heal over time brews would also use same sort of minor buff slots instead of wiping those powerful stat boost brews