"Create a recipe for Low-Glycemic Index Agave Mead, a light, delicate, vegan-friendly mead made with agave nectar as a low-glycemic alternative to honey. The recipe should serve 6 and include ingredients such as agave nectar, water, Young’s all-purpose dried active brewing yeast, optional yeast nutrient and energizer, and optional dried fruit or unrefined brown sugar to boost alcohol content. Provide clear step-by-step instructions for fermentation, maturation, and bottling."