Start with the smaller ratio and adjust as needed. Stir and simmer over medium-low heat until thickened, about 10 minutes. Brush or rub 1/2 of molasses mixture all over the outside of the ham. Cover pan tightly with aluminum foil or lid, and bake for 18 minutes per pound to an internal temperature of 148 degrees F. Let ham stand 10 minutes. Place ham flat side down in pan with 1 cup of water. Mix yellow mustard and brown sugar in a 1:2 or 1:3 ratio. Stir and simmer over medium-low heat until thickened, about 10 minutes. Taste the glaze before applying to ham to make sure that it is as sweet or tart as you prefer. Combine all ingredients in a sauce pan. Brush glaze over the ham during the last 15 minutes of warming or cooking. The ham that I used for this recipe weighed between 6-7 pounds. Brush glaze over the ham during the last 15 minutes of warming or cooking. That's one part mustard to two or three parts brown sugar. https://www.allrecipes.com/recipe/245275/smithfield-holiday-ham Combine all ingredients in a sauce pan.