The good folks at Bass have designed one of the neatest pieces of barware I’ve seen since the muddler became a hit: Called the brolly (British slang for an umbrella), it’s a little gizmo designed specifically for making Black & Tans. (Black & Tan is pint glass half full of pale ale (typically Bass), with stout (typically Guinness) filling up the rest. The trick is keeping the two separate in the glass.)

Making a B&T at home usually means trying to dribble Guinness down onto a spoon so it slowly floats on the Bass, something which is nearly impossible to do unless you make these every day for a living.

Enter the brolly, a triangular wedge that attaches to the top of your pint glass. Just pour in the Bass, building up a nice head, then put the brolly on and pour the stout into it. Tiny holes on the sides ensure the stout is delivered to the top of the ale slowly enough to make it float perfectly. Even though my Guinness can was extra foamy, my results were dead-on perfect the first time out. (It’s tough to see in the photo below, which I realize looks like there’s far too much black and not enough tan, but the layer separation was exceptional in real life.)

Want one? If you live in California, send Bass a check for one dollar to the address on this page. Offer runs until April 30. If you ever plan to make even one Black & Tan in your life, this is a tool you definitely need in your bar. (Sorry folks, the box you see above is just a promo. You only get the brolly tool, which is pictured on top of it.)

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