Add the honey, water, and smashed garlic clove (if using) to a small saucepan. Set over low heat and warm for about 3–4 minutes, just until the honey loosens and becomes more fluid. Do not let it boil; if you see tiny bubbles forming around the edges, reduce the heat.

Stir in the red pepper flakes, apple cider vinegar, kosher salt, and any optional spices or aromatics you’re using, such as smoked paprika, cayenne, thyme or rosemary sprigs, and citrus zest. Cook over low heat for another 3–5 minutes, stirring occasionally, until warm and fragrant but not bubbling.

Turn off the heat and let the mixture steep in the pan for about 5 minutes. Carefully taste a cooled spoonful. For more heat, add a bit more red pepper flakes, cayenne, or hot sauce. For more tang, add up to 1 additional tablespoon of vinegar. If it tastes too sharp, stir in another tablespoon of honey.

Set a fine-mesh strainer over a heatproof bowl or jar. Pour the hot honey sauce through the strainer to remove the garlic, herb stems, zest, and most of the chili flakes. Press gently on the solids with a spoon to extract as much flavored honey as possible. If you prefer a rustic look, you can skip this step or strain out only the larger pieces and leave some flakes in.

Let the hot honey sauce cool to room temperature. Transfer it to a clean glass jar or bottle with a tight-fitting lid. It will thicken slightly as it cools but should remain pourable and easy to drizzle. Store in a cool, dark place for up to 1 month, or refrigerate for 2–3 months. If it thickens or crystallizes, gently warm the closed jar in a bowl of warm water or microwave in short 10–15 second bursts, stirring in between, until fluid again.