I think a bit of salt and butter is what they traditionally do in porridge, and really good oats.

I can't be botehred with that. Just oats and water in the microwave then I add milk and whatever fruit I have (at the moment it's stewed apples with spices and maple syrup I made) and I had a spoonful of vanilla collagen powder (it's sugar free but does have a sweetener) and some psyllium, maybe toasted pepitas on top.