The most commonly recommended is cereal. However, the mouth develops in sync with the digestive system, and the teeth (molars) that are designed to grind grains don’t come in until well after 1 year, closer to 2, so the necessary enzymes to digest aren’t there, which is why infant cereals are so highly processed.
I hope to go more in depth in the future about Baby’s First Foods by Appearance of Teeth, but for now, to get the ball rolling, here’s some good choices:
Good first foods are soft and have contain lots of good fats.
Avocado contains lots of healthy fats. Needed for growth and brain development. Avocado also contains lots of magnesium which we often don’t get enough of, as well as B vitamins, including niacin, vitamin E, vitamin K, potassium, folate, and fiber. It couldn’t be easier, just mash it, and mix in some breastmilk if you need to thin it out.
Egg YOLK. Egg yolk is easy to digest and contains choline which is great for developing eyes and a rapidly developing brain. It also contains cholesterol which is needed for hormone development. Egg yolks also contain important minerals that baby needs right now, like calcium, zinc, selenium, phosphorus, and vitamins E and B6.
Bananas are a great source of vitamin B6, vitamin C, manganese, magnesium, and potassium and they’re super easy to prepare. Just mash them and mix with a little breastmilk. You can even mix with avocado.
Winter squash.(acorn or butternut). Lost of good nutrients here; vitamin A, vitamin C, magnesium, potassium, and manganese. Roast it and mash.
Organ meats, like liver are actually a really good choice, because it contains vitamin A, D, all B vitamins, folate, zinc, and CoQ10. Chicken liver has a good amount of iron as well. But organ consumption has fallen out of favor, and I’m not complaining about that. But if you want to give organ meat as a first food, be sure to choose high quality, organic, free range, grass fed.