In a large saucepan stir together the water, ginger, and lemon peel strips. Bring to boiling; reduce heat. Simmer, uncovered, for 10 minutes. Remove ginger and lemon strips with a slotted spoon and discard.

Place tea bags in a teapot; immediately add simmering water mixture. Cover and let steep according to tea package directions (1 to 3 minutes). Remove tea bags, squeezing gently, and discard. Serve immediately in heatproof glass mugs or cups. If desired, sweeten to taste with sugar substitute and garnish with lemon slices. Makes 5 to 6 servings.

Remove lemon peel using a vegetable peeler. If necessary, use a sharp knife to scrape off any white pith that remains on the peel, as this can cause bitterness.