"Create a recipe for homemade grapefruit mead using 5-6 large grapefruits to yield about 2 cups fresh juice, 2.5 lbs honey (wildflower or clover preferred), water to fill to 1 gallon total volume, 1 packet Lallemand K1-V1116 yeast, 2 tsp yeast nutrient (such as Fermaid O, divided), and 1/2 tsp potassium sorbate for stabilization. Include detailed steps for preparation, fermentation, and stabilization."