This is delish served over Rach's Stuffing Swirl Rolled Turkey Breast with Cheddar-Chive Mashed Cauliflower.
Melt butter in a medium skillet or a saucepot over medium to medium-high heat then add the black pepper to toast. Whisk in flour, add cider and let it bubble up. Add stock and thicken a bit. Add Worcestershire, maple syrup and salt, adjusting flavor of your gravy as you work. Remove from heat and stir in mustard for a kick.