Mepra Boston Shaker 25.38 oz with Garnet Glass

A Boston shaker is two pieces and nothing else. There is no built-in strainer in this design, so you need a separate one before your first drink, and knowing that now is better than discovering it holding a full tin over a glass.

• Two parts, no strainer A steel tin and a glass cup that seal against each other, with straining done separately.
• 25.38 ounces Enough for two drinks with ice, which is what bar shakers are sized around.
• Garnet glass half The deep red is the color of the glass cup rather than a coating on the steel.

What the Missing Strainer Buys

Shakers with a built-in strainer are slower to open, harder to clean and fixed to one strainer hole size. A Boston gives that up and gets speed in return: the seal breaks with a tap, the tin empties in one movement, and you choose the strainer that suits the drink. A Hawthorne strainer is the standard partner and it is a separate purchase, which is the honest cost of buying the shape professionals use.

How the Seal Actually Works

The two halves are not threaded and do not click. You seat the glass into the tin at a slight angle and strike the base once, and the temperature drop as the ice hits chills the air inside and pulls the joint tight. That is why a Boston seals harder the colder it gets, and why it needs a firm tap on the side to break rather than a twist.

Twenty Five Ounces at the Bar

The capacity is not the drink size, it is the working volume. A single cocktail is three to five ounces before dilution, and the rest of the tin is ice and headroom for the liquid to travel through it. Filling a shaker to the top is how a drink ends up under-chilled, because the ice has nowhere to move.

Sealing, Breaking and Washing

What opens a shaker that is stuck? Hold the tin in one hand and strike the side with the heel of the other, at the point where the glass meets the metal. Twisting is what cracks glass halves.

Is the glass half fragile in use? More than the steel, and that is the trade. A glass cup goes into the sink separately and never into a crowded rack where it can be knocked by heavier pieces.

Does it work without the glass half? Yes, with a second tin. Many bartenders pair two metal halves for speed and keep a glass one for drinks the guest can see being made.