Mepra Boston Shaker 25.38 oz with Emerald Glass

Half of this shaker is glass, and that half does a second job. The green cup is a mixing glass in its own right, so stirred drinks never need a separate vessel and shaken ones can be watched as they change color.

• A mixing glass too Stir a martini in the same cup that seals the tin for a shaken drink.
• You can see the dilution Ice melting and color lifting are both visible through the glass half.
• Emerald in the glass The green sits in the cup material rather than in a finish that can wear.

Why Bartenders Watch the Ice

Dilution is the part of a cocktail nobody can taste until it is finished, and it is decided by how long ice spends moving through liquid. Seeing the ice shrink tells you when to stop in a way that counting seconds never quite does, because ice from a freezer at different temperatures behaves differently. A closed metal tin gives you no information at all until the drink is poured.

Two Vessels in One Purchase

Stirred drinks and shaken drinks want different treatment, and the usual answer is two objects: a mixing glass for the first, a shaker for the second. A glass half covers both. Pour, stir and strain directly from the cup for anything spirit-forward, or seat it into the tin and shake for anything with juice, dairy or egg in it.

Color That Cannot Rub Off

Colored coatings on metal barware wear at the points where hands and ice contact them most, which is exactly where you look. Color carried in glass has nothing on the surface to abrade, so the green stays the same shade after a thousand washes as it was on the first. The cost of that choice is the obvious one: glass breaks and steel dents.

Stirring, Chilling and Care

Can the glass half go in a dishwasher? It survives one, but a bar glass lives longer washed by hand. Machine racks let glass knock against metal, and the rim is the part that suffers.

Does a glass cup chill as fast as metal? No, and that is worth knowing before the first drink. Steel takes the cold from ice almost instantly while glass lags behind, which is one reason stirred drinks get stirred longer than shaken ones get shaken.

What should not go in the glass half? Anything you would not put in a drinking glass, hot liquid especially. A glass cup at room temperature filled with something hot is the standard way to crack one.