i would also suggest low sodium salt or dilute stock to cook with potatoes, aubergine, any veg (non orange in your case) with some meat if you eat meat. I love stew, so very tasty and DS loves it, too. Meat will be so tender. I also make asian stew with yellow bean sauce, soy bean paste (japanese miso) or just simply some soy sauce, five spices and a bit of sugar. It has sodium, true.. but it makes tasty sauce but needs long cooking is a down side. Also coconut milk is a good base for sauce. Fry a tiny bit of curry powder or use non spicy version, (hmmm might irritate your LO's sensitive skin, though)... Skip the curry powder LOL.. just use it as the liquid. You can also use beer, but i'm not sure if it's good for kids
but the alcohol will be long gone
I also make a chicken dish, just boil it with water for 1.5 h till it's really tender. It's really tasty. For us adults, I make a soy dipping sauce and if u like spicy, add some chilli sauce. very very tasty. oh my.. i'm hungry now
HTH