Hot answers tagged all-grain
Its two different options. You can either do the malt version or the extract version. Wheat Liquid Malt Extract is actually a mix (usually 50/50) of wheat malt and pils/2-row/pale malt, depending on the manufacturer.
Sounds normal to me. When I was first reading up about BIAB, it was mentioned in several places that this is an issue. Absorbing 3/4 of 5 gallons seems like a bit much, but it will absorb some (I've heard about a quart per pound?). It probably didn't absorb that much, as the wort would drain out of the bag if you could hold it over the pot for 10-20 minutes. ...
Hulled barley is about 2% fat by weight. That's almost certainly why we see a slight oil-slick on the wort before it boils. I'm not sure why you don't see it when you're boiling inside. It could be like you say,that the rapid speed of the outdoor boil has something to do with it. Or it could be that the light is brighter outside, showing the oil more ...
Based on having done it myself, you will possibly have a burned, smoky flavor and not in a good way. Whether it's safe to drink depends at least partially on what the bag is made of. If the bag was muslin, it's likely safe. If it was nylon, I'd be more worried.
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