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Ingredients
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Cocktail
Method
Make & Serve
Prepare ice and shaker
Fill a cocktail shaker or mixing glass halfway with ice (about 1 cup). This chills the liqueurs quickly when shaken briefly.
Add base liqueur
Pour 1.5 oz peach schnapps into the shaker. Peach schnapps is the bright fruity base and should be the largest measure.
Add coffee layer
Add 0.5 oz Kahlúa to the shaker. This gives a coffee depth that contrasts with the peach.
Add cream layer
Add 0.5 oz Irish cream liqueur to the shaker. The Irish cream will combine slightly but will remain creamy and create the signature 'brainy' swirls when layered/poured.
Optional strength and cream
If you want a stronger drink, add 0.5 oz vodka. For a slightly creamier mouthfeel, add a 0.25 oz splash of heavy cream or half-and-half.
Shake briefly
Cap the shaker and shake only 6–8 seconds—just long enough to chill and slightly mix the liqueurs without fully homogenizing the Irish cream. Over-shaking will ruin the 'brain' texture.
Strain and layer
Strain the contents of the shaker into the chilled shot glass. Pour steadily but gently so the Irish cream can create slow curds and swirls in the peach schnapps and Kahlúa. The visual 'brain' effect forms as the cream coagulates slightly in the liqueurs.
Garnish & serve
Garnish with a maraschino cherry on a pick if desired. Serve immediately as a shooter. Advise guests to sip slowly to appreciate the layered flavors and texture.