Cocktail shaker

Shaking is a short, vigorous mix that does three jobs at once: it chills the drink, adds dilution from melting ice, and aerates. Aeration is what turns egg white into a stable foam, softens the sharpness of fresh citrus, and helps syrups and purées disperse evenly. A shaker also acts as a strainer, depending on the style, so you can hold back ice and pulp when you pour.

What it does not do is replace careful measuring or good ice. A shaker cannot correct an unbalanced recipe, and warm, wet or very small ice will dilute faster than you expect. Many recipes specify shaking or stirring because they are aiming for a particular look and mouthfeel, not simply because one method is quicker.

Leaks usually come from a poor seal. With a cobbler shaker, check the cap and built-in strainer are seated properly; with a Boston shaker, make the seal with a firm tap and keep the smaller tin or glass slightly angled. If it is stuck, a sharp tap on the side of the seal, not brute force, is what releases it.

Over-dilution is often an ice issue rather than a shaking issue. Start with plenty of solid ice and shake until the outside of the tin is properly cold. Under-shaking shows up as a drink that tastes hot and disjointed, with syrup sitting heavy. Finally, remember that anything fizzy is usually added after shaking, otherwise you lose carbonation and build pressure in the shaker.

If you are deciding between shaking, stirring and blending, browsing by Cooking method helps you match technique to the drink’s texture and clarity. Difficulty is also useful for cocktails, because some recipes hinge on timing, straining and garnish work rather than long ingredient lists.