Shake or Stir? The Rule and Its Exceptions

Shake anything cloudy. Stir anything clear. That covers almost every drink you will ever make, and knowing why it works tells you what to do with the ones it does not cover.

The rule

If a drink contains citrus, egg, dairy, or any thick juice, shake it. If it is only spirits, liqueurs and fortified wine, stir it.

So a Daiquiri, a Margarita and a Whiskey Sour are shaken. A Dry Martini, a Manhattan, a Negroni and an Old Fashioned are stirred. Every drink in the spirit-forward category is stirred, and that is very nearly the definition of the category.

Why

Both techniques do the same two jobs, chilling and diluting, and they do them at different speeds and with a different side effect.

Shaking is violent. It chills fast, dilutes fast, and forces air into the liquid. That aeration is what emulsifies citrus and egg into a texture rather than a layer, and it is what gives a shaken sour its foam and its lighter body. It also breaks small chips off the ice, which is why a shaken drink is cloudy.

Stirring is gentle. It chills and dilutes more slowly and adds no air, so the drink stays clear and keeps a heavier, more viscous feel on the tongue. In a drink that is 90% alcohol by volume, that weight is the point. Shake a Manhattan and you get a cloudy, thin, slightly frothy version of a drink whose whole appeal is the opposite.

How long

• Shaking: 10 to 15 seconds, hard, with the tin about two-thirds full of ice. You are done when the outside is too cold to hold comfortably.
• Stirring: 20 to 30 seconds, smoothly, with the mixing glass full of ice. Longer than most people think, and under-stirring is the more common fault.

Both numbers assume decent ice. Small, wet, half-melted cubes dilute faster and chill worse, which is why ice is worth thinking about before technique is.

The exceptions

The Espresso Martini

Shaken, hard, and it is the clearest illustration of why aeration matters. The foam on an Espresso Martini is coffee crema emulsified by the shake. Stir it and there is no foam, and the drink looks and feels wrong even though it tastes nearly the same.

Anything carbonated

Never shake soda, tonic or sparkling wine. Build the rest of the drink, add the fizz last, and give it at most one gentle lift with a barspoon. This is why a French 75 is shaken before the Champagne goes in, not after.

The Old Fashioned

Stirred, and it is worth saying explicitly because it is the drink people shake by accident. Spirit, sugar and bitters, no citrus in the glass, so there is nothing to aerate and everything to lose.

The dry shake

For egg-white drinks, shake once with no ice at all, then again with ice. The first shake builds the foam without dilution and the second chills it. It is the one place the order of operations matters.

The one thing that is not a rule

"Shaken, not stirred" is a line from a film. A Martini is stirred, and a shaken one is cloudy, more dilute and colder. Some people prefer it that way, which is fine, but it is a preference rather than the recipe.