When you make a biga, are you supposed to knead it for a few minutes? I was watching some videos on making one, and they just mixed the flour, water, and yeast together to make something that looked like pancake batter. When they were done mixing it they put it in the fridge. The other day I bought the Bread Baker's Apprentice by Peter Reinhart and for his biga, he says to mix everythng together and then knead it on the counter for 4 to 6 minutes. Any insight on this would be helpful. Thanks.