Porridge or 'grautr' was eaten regularly... especially in southern parts of Scandinavia where oats were easier to grow. And would have been made as you describe Auðvarðr... but on special occasions... they would have porridge with milk.
And even though it's not sourced, I would imagine that on VERY special occasions, they could sweeten it with honey.
But grautr was eaten in different ways... For example, a simple recipe is to fill a pot with oats and water... and plenty of salt... and then to put a fish into the mixture... and cook the fish in the porridge. Þórr ate this at some point in one of the sagas.
Pork was a popular meat indeed. Chickens, cows, sheep and pigs were kept for slaughter, but occasionally, the Norse did eat hare, horse, whale, seal, and quite a lot of things if they were hungry enough!
But pork would only have been eaten regularly near the winter months. Pigs were slaughtered usually around November/December (Ýlir in the Old Icelandic calendar)
Chicken was a good meat since it did not have to be preserved as well as the other meats... since it would be eaten rather quickly. Chickens are rather small.
So it could be eaten all year round.
Beef was not a popular meat at all. Cows were used as the Norse currency, because of their value... which came from their milk. Meat was not as popular with the vikings as dairy products were... Cows were kept for their milk which could be used to make butter, cheese, skýr etc.
If a farmer hadn't had a good harvest and hadn't got enough food to feed the cows during the winter... he would have to work out how many cows he could afford to feed... and kill the rest. Eating the meat is almost an admittance of failure.
Which is where I got the idea for a New Old Norse phrase... eta kýr (to eat the cow) - which means "to admit failure, defeat"
Here's my recipe for a traditional viking chicken stew. You WILL need a ketill for this though.
Chicken breast
High quality dark ale (I used "Old Thumper")
Leek
Onion
Carrots
Parsnip
Turnip
Thyme
Salt
Cut up chicken into small pieces
Chop up the leek, onion, carrots, parsnip and turnip
Boil the chicken in water, when done, drain the water away... and add the vegetables.
Fill the ketill with the ale and cook both chicken and vegetables in the ale.
Add thyme and salt to flavour! And serve with viking flatbread.
Which is:
Barley flour
Water
Mix one and a half cups of barley flour, with half a cup of water... turn it into dough, knead the dough...
Roll the dough flat in little round discs. The flatter the better, and cook in the oven for 5 minutes on a high heat.
This can be eaten on its own, or with butter and Jarlsberg cheese.
I even made a viking dessert which is:
Oats
Walnuts (vikings sometimes had them imported)
Honey
Apple
Full-cream
Grind up the walnuts into small pieces, and cut up the apple into very small pieces... mix the oats, walnuts, and apple...
and add honey until the mixture is thick and won't fall apart... then cook in the oven and serve with cream.
That'll do for now I think! XD