Parboil the brats for 10 minutes, brown in the broiler, and serve the next day in a Nesco floating in beer and onions. PUrists will sneer at pre cooking but it's a necessity in this case. Works for us. Use Johnsonville if you can get them. They have a Stadium brat that is already pre cooked and very tasty.
100% orange juice from concentrate with an excellent source of calcium & vitamin d contains pure filtered water, premium concentrated orange juice, less than 1% of: calcium phosphate* and calcium lactate* (calcium sources), vitamin D3*. * ingredients not found in regular orange juice.
However, one fifth of a block of raw tofu has lots of lovely Vitamin D in it. But before you go eating it by the block raw, you need to do something to the tofu (like marinade it). One cup of fortified orange juice has more Vitamin D than a cup of fortified milk.