This is the recipe for the biscuits. The sour dough starter is 2-1/2 cups of flower with a teaspoon of sugar mixed in, 2-1/2 cups of 100-105 degree water. One packet of yeast and proof it in the water then mix it into a slurry and cover with a towel at room temp for 24 hrs. After 24hrs remove towel and cover loosely with plastic wrap and observe it for 4-5 days, stirring and mixing in the bubbles daily. Should be ready at the end of the previously mentioned 4-5 day period. Mine is starting to smell nice and tangy. They say what ever you take out of the mixture, say 1 cup like I think the recipe below calls for, you just mix up a cup of flour and water in a slurry and put back in the starter to replenish and keep it going. No added yeast for the replenishing.
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I'm thinking I'll just do a "domestic" run of this recipe this weekend and see how they come out. Then plan for the Dutch Oven on the 2nd.