Rosemary Infused Gin and Tonic, Made Fresh at Home

A rosemary infused gin and tonic is a crisp cocktail made with rosemary-steeped gin, tonic water, lime, and ice. The gin and tonic is associated with British India, while adding rosemary is a contemporary variation that brings a fragrant, savory edge to the familiar drink. A short infusion keeps the herb noticeable without overwhelming the gin’s botanicals or the tonic’s bubbles.

Ingredients

1 cup (240 ml) London dry gin, for infusing; this makes enough for about five drinks.
2 fresh rosemary sprigs, about 4–6 g total, plus 1 small sprig for garnish.
1½ fl oz (3 tbsp; 45 ml) rosemary-infused gin, for one cocktail.
4 fl oz (½ cup; 120 ml) chilled tonic water.
1½ tsp (7 ml) fresh lime juice, plus 1 lime wheel or wedge for garnish.
1 cup (about 140 g) ice cubes, or enough to fill the serving glass.

Instructions

Prepare the rosemary and gin. Rinse the rosemary sprigs under cool running water, then pat them completely dry with a clean towel. Measure the gin into a clean glass jar or other nonreactive container with a tight-fitting lid. Add the two sprigs and press them gently once with a spoon to release their aroma. Do not crush or shred the leaves; doing so can make the infusion overly resinous. This setup takes about 3 minutes.
Infuse for 30 minutes. Cover the jar and leave it at room temperature for 30 minutes. At the end of that time, smell and taste a small drop. The gin should have a clear piney, herbal aroma while still tasting recognizably like gin. If you prefer a more pronounced rosemary note, let it steep for another 10 minutes and taste again, but avoid leaving the sprigs in for hours because the flavor can become woody and dominant. The listed total time uses the 30-minute infusion.
Strain the infused gin. Remove the rosemary sprigs with a spoon or pour the gin through a fine-mesh strainer into a clean container. Discard the used herbs. Measure 1½ fluid ounces (45 ml) of the infused gin for the cocktail, reserving the rest for another drink. Straining promptly is important: the rosemary continues to flavor the gin if it remains in the container.
Build the drink over ice. Fill a chilled highball glass with ice. Pour in the measured rosemary gin and lime juice, then add the tonic water slowly down the side of the glass. Stir once or twice with a long spoon—just enough to combine the ingredients without driving out too much carbonation. This takes about 3 minutes, including garnishing.
Garnish and serve. Add a lime wheel or wedge and a small rosemary sprig. For a more fragrant garnish, gently clap the rosemary sprig between your palms before placing it in the glass; this releases its aroma without adding extra rosemary flavor to the drink. Serve immediately while the ice is firm and the tonic is lively.

Tips

Use a measured infusion time. Rosemary varies in strength, and small sprigs can be more potent than large, woody ones. Taste at 30 minutes rather than relying on color—the gin may remain nearly clear even when it has taken on plenty of aroma. If the flavor is too assertive, blend it with a little uninfused gin instead of trying to remove the taste.
Dry the herbs well. Water clinging to rosemary can dilute the gin and carry unwanted flavors into the infusion. Pat the sprigs dry after rinsing, and use a clean jar. There is no need to bruise the leaves heavily; gentle pressure is enough to start releasing their scent.
Keep everything cold before mixing. Chill the tonic, glass, and gin before assembling the cocktail. Cold ingredients help the ice melt more slowly, so the drink stays balanced longer. Add tonic last and stir lightly; vigorous stirring or pouring from a height makes a flatter drink.
Adjust the balance one element at a time. Begin with the stated quantities, then taste. Add a small splash of tonic for a lighter drink, a few drops of lime for more brightness, or a little uninfused gin if rosemary is too strong. Avoid adding extra rosemary directly to the glass, where it can continue steeping as you drink.

Serving Suggestions

Serve this cocktail in a highball glass, a copa-style balloon glass, or any sturdy glass with enough room for ice and tonic. A tall glass gives the bubbles space to rise, while a wider glass makes the rosemary and lime aromas easier to notice. Use large, solid ice cubes if available: they melt more slowly than small or cracked ice and help keep the drink from becoming watery before it is finished.

This gin and tonic works well as an aperitif or alongside a relaxed meal. Its herbal, citrusy profile pairs naturally with salty snacks such as olives, roasted nuts, crisp potato chips, or marinated artichokes. It also suits smoked fish, grilled vegetables, and simple cheeses, though the cocktail is best served before strongly spiced or very sweet food that could mask its delicate rosemary aroma. For a small gathering, prepare the infused gin in advance and measure each drink individually so the tonic stays freshly carbonated.

For a balanced first sip, make sure the lime wedge is a garnish rather than a signal to squeeze in a large amount of juice. The measured lime in the recipe provides freshness without turning the drink sour. Guests can squeeze their wedge to taste. Keep any extra tonic chilled in its original sealed bottle and open it just before mixing; once opened, it gradually loses its fizz.

Variations

Make it less bitter: Choose a lighter-style tonic or use 3 fl oz (90 ml) tonic and top with 1 fl oz (30 ml) chilled sparkling water. This softens the quinine bitterness and makes the drink less sweet or intense, depending on the tonic. Keep the gin and lime measures the same at first, then adjust after tasting.

Add a citrus twist: Replace the lime juice with 1½ tsp (7 ml) fresh lemon juice, or express a strip of lemon peel over the glass and use it as the garnish. Lemon gives the cocktail a slightly rounder, less sharp citrus aroma. Avoid adding both a large squeeze of lemon and extra lime at once, which can make the drink unbalanced.

Use a different herb: Thyme can stand in for rosemary in the infusion. Start with two small sprigs and taste after 20 minutes, since delicate herbs can develop quickly. Thyme makes a softer, more floral drink; it will not have rosemary’s pine-like character. A small basil leaf is better used as a garnish than infused for the full 30 minutes, because it can darken and taste grassy.

Make a lighter, no-alcohol version: Skip the gin and combine ½ cup (120 ml) chilled tonic with ½ cup (120 ml) sparkling water, 1½ tsp (7 ml) lime juice, ice, and a lightly bruised rosemary sprig. Let the rosemary sit in the glass for only a few minutes, tasting as you go. The result is more delicate and has no gin’s botanical depth, but it keeps the refreshing citrus-and-herb combination.

Storage and Reheating

The finished cocktail is best made to order. Ice melts and tonic loses carbonation, so a mixed gin and tonic does not store well; do not prepare it hours ahead or expect it to taste freshly made the next day. If a drink has been sitting out, discard it rather than saving it for later. Keep the tonic separate until each serving is assembled.

Strained rosemary-infused gin can be kept in a clean, tightly closed bottle in the refrigerator for up to 1 week for best flavor. Refrigerate it within 2 hours of preparing it, label it with the infusion date, and keep the rosemary sprigs out of the bottle so the flavor does not continue intensifying. The gin may also be kept at room temperature in a cool, dark cupboard, but refrigeration is a simple way to keep the prepared infusion cool and aromatic. Discard it if it develops an unusual smell or appearance. There is no reheating step for this cocktail.

Frequently Asked Questions

Can I infuse the gin for longer than 30 minutes?

Yes, but check it in short increments. Rosemary strength depends on the freshness and size of the sprigs, so a longer steep can quickly shift the flavor from fragrant to woody or medicinal. Taste after 30 minutes, then continue for 10 minutes at a time if you want a stronger infusion. Remove the sprigs as soon as it tastes right.

Can I use dried rosemary instead of fresh?

Fresh rosemary is preferable because it gives the gin a cleaner, greener aroma. Dried rosemary is more concentrated and can release dusty or piney notes, so it is not a direct one-for-one substitute. If fresh is unavailable, start with about ¼ tsp (0.2 g) dried rosemary in the cup of gin, taste after 10 minutes, and strain as soon as the flavor is noticeable.

What kind of gin and tonic water should I use?

A straightforward London dry gin makes a reliable base because its juniper and citrus notes work with rosemary. A highly flavored gin can compete with the herb, so start with a classic style if you want the rosemary to stand out. Tonic varies in sweetness and bitterness; use a chilled one you enjoy on its own, then adjust the lime or tonic amount to suit it.

Can I prepare a pitcher for guests?

You can pre-measure the rosemary gin and lime juice in a covered pitcher and refrigerate them for a few hours, but wait to add tonic and ice until just before serving. For each drink, use 1½ fl oz (45 ml) infused gin, 1½ tsp (7 ml) lime juice, and 4 fl oz (120 ml) tonic. Add tonic gently, then serve individual glasses over fresh ice.

How do I fix gin that tastes too strongly of rosemary?

Mix the infused gin with an equal or smaller amount of uninfused gin, then make a small test drink before adjusting the whole batch. More tonic may soften the herbal edge, but it also makes the cocktail longer and can increase sweetness. If the infusion is only slightly too strong, extra lime in small increments can brighten it without hiding every botanical note.

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