How does a three-piece shaker differ from a Boston shaker?

A three-piece cobbler shaker has a base, a lid with a built-in strainer, and a small cap. You shake, remove the cap, and pour through the strainer. A Boston shaker is two pieces and needs a separate strainer.

Is 18 oz big enough for two cocktails?

It holds enough for one large drink or two small ones with ice. For batches or several servings, a larger 24 to 28 oz shaker is a better fit.

Can I put it in the dishwasher?

No. It is hand wash only. Wash with warm water and mild soap, then dry immediately to avoid water spots on the brushed finish.

Will the built-in strainer catch mint leaves and fruit pulp?

It catches ice and larger pieces, but fine pulp and small herb bits can pass through or clog the holes. Double strain through a fine mesh sieve for mojitos and muddled drinks.

Does the lid seal tightly?

The three pieces press together to form a seal. Tap the lid to break the seal after shaking, and don't overfill past the base's shoulder or the lid can stick.