c("Boil sweet potatoes until half cooked, 15 to 20 minutes.", "Peel and slice sweet potatoes thinly.", "Mix brown sugar, cinnamon, nutmeg, ginger and salt.", "Place a layer of sweet potatoes in pastry-lined  9-inch pie pan.", "Sprinkle with some of the spice mixture; dot with a little bit of butter.", "Continue with layers until all ingredients are used, dotting top with butter.", "Add cream.", "Top with top crust, fluting edges and cutting vents.", "Bake at 425 degrees Fahrenheit for 30 for 40 minutes.", 
"If potatoes are still not tender, reduce temperature to 350 degrees Fahrenheit and continue baking until they are done.")