Preheat oven to 375 degrees. Pour orange marmalade into a bowl and add about 1/2 of the coke. Let it set while you prepare the ham. Remove visible fat from ham and crisscross cut the ham. Place in a 9 by 13-inch baking pan and pour the marmalade/coke mixture over the ham. Place in the oven uncovered and bake for 20 minutes. This allows the marmalade to set or crisp on the ham. After 20 minutes cover the ham with foil and bake for an additional 30 to 45 minutes. Baste with the pan drippings every 15 minutes. If there are not enough pan drippings, mix up some more marmalade mixture to baste on the ham. Uncover the ham for the last 20 to 30 minutes and baste every 7 or 8 minutes. Allow the marmalade mixture to brown until dark brown in color. Remove from oven. Put ham onto a platter to cool before cutting. Total cook time is about 1 hour 5 minutes to1 hour 35 minutes. Use the left-over ham in red beans the next day.
Mix flour and shortening together in bowl until the shortening is well blended into the flour. Make a "well" or hole in the center of the flour/shortening mixture. Add a portion of the milk to the well. Use a fork or your fingers and work from the center of the bowl to the outside of the bowl and blend the milk into the mixture. Add more milk as needed. The dough will be slightly sticky. To make the biscuits coat your hands with flour and pinch off enough dough for 1 biscuit, about 2 tablespoons. Roll and knead the biscuit in your hands just until it looses its stickiness. Place in a cast iron skillet. Continue to make the rest of the dough in this manner. After all biscuits are made put a little water on finger tips and gently rub the tops of each biscuit, this removes any bumps on the top of the biscuits. Bake in a preheated 450 degree oven until golden brown, about 15 minutes.
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