Clean your jar thoroughly. Wash with hot, soapy water and rinse well.
A clean jar keeps the flavor pure and helps avoid off tastes.
Add herbs or tea bags. Use about 1 tablespoon loose herbs (or 1 tea bag) per cup of water. For a 1-quart jar, use 4 tablespoons loose herbs or 4 tea bags.
Fill with cool, filtered water. Leave an inch of space at the top. If adding citrus, tuck a few slices along the sides of the jar.
Seal and set in direct sun. Place the jar outdoors or on a sunny windowsill for 2–4 hours.
The longer it sits, the stronger the flavor. Start checking at 2 hours.
Taste and adjust. When the flavor is where you like it—smooth, fragrant, and not too strong—bring the jar inside.
Strain immediately. Remove tea bags or strain out loose herbs to prevent over-extraction.
Sweeten if you like. Stir in a little honey or simple syrup while the tea is still room temp so it dissolves easily. Keep it light to let the herbs shine.
Chill. Refrigerate until cold, at least 1–2 hours.
Serve over ice with fresh mint or a citrus slice.