Hi well I love porridge and eggs, we eat a lot of free range eggs buy big trays from a local farm and milk (we are vegetarians and like to know where the food came from). Will have to try both together sometime.
Btw your little one is doing so great eating all those foods , mine was extra fussy (ie still doesn’t eat some of your list and he’s 30….and yeah fussiness tends to go once they leave home and fend for themselves!!!)
Some other suggestions. Does your wee one like cheesy sauce say with pasta or cauliflower, or with anything really? My grandmother was an amazing cook (think big houses before she retired). When I was little I used to stay at hers and she’d make amazing cheese sauce with hardly any cheese but an egg also in it, makes it go really creamy. I’ve tried it once or twice years ago so that might be an option.
Howabout scrambled egg? I’ve never been much of a fan but recently making it so much better than before and I’ve got addicted!!! I’m making it in a very small frying pan with big chunk of butter in pan then once warmed up add the already mixed eggs, milk, salt and pepper. No idea what the difference really is but it’s to die for and I’m having it on seeded bread/toast with butter (your son eats that) plus fried mushrooms/fried tomatoes/cherry tomatoes or grapes etc.
If that fails howabout egg with soldiers but put some peanut butter on the soldiers as that might help. Or otherwise a cheesy egg omelette with veggies you can hid tons of grated veggies in that. If those also fail hoe about poached egg on the bread he likes with Hollandaise sauce (he should like that based upon what he already eats). Also egg fried rice, can’t taste the egg in that.
As for not eating potato 😳!! you need to also hide it in stuff. Try potato cakes/potato thins shop bought are fine. Eventually might eat them and an egg!!!
One way I got a fussy relation to eat potatoes was to cook a baked potato scoop it all out add lots of butter cheese and herbs and onion and put back in oven. They tucked into it that way and loved it so, just left the skins so that might work.
Oh and just remembered have you ever tried bread and milk? My grandmas recipes again. bread with butter hot milk and dried fruit on top. Delicious and you could potentially get an egg in that way too in the hot milk 🙂