My daughter enjoys making these to give as presents. I tried it, and it's excellent.

Serve over ice, garnished with fresh mint leaves if desired.

For a more herbal twist, add a few sprigs of fresh rosemary or thyme to the slow cooker along with the lemon slices. If you prefer a sparkling version, top off each glass with a splash of club soda just before serving. For a spicier kick, consider adding a few slices of fresh ginger to the slow cooker. Adjust the sweetness by adding more or less honey to suit your taste. You can also experiment with different types of honey, such as wildflower or clover, to subtly change the flavor profile.