Bull's Milk

Pro tips

• Dissolve powdered sugar completely in the rum and brandy before adding milk to ensure a smooth texture.
• Use fresh, cold milk and serve over ice immediately after mixing to maintain separation and texture.
• Measure spirits accurately—the rum-to-brandy ratio defines the drink's character; don't eyeball.
• Stir gently after adding milk to avoid over-mixing, which can make the drink appear curdled.

Substitutions

• Old Mr. Boston Five Star Brandy → Cognac or VS brandy (similar depth and smoothness)
• Old Mr. Boston Imported Rum → Light or dark rum, aged rum (adjusts flavor profile; use same volume)
• Powdered Sugar → Simple syrup, 1/2 tsp (dissolves instantly; use same sweetness level)
• Milk → Heavy cream thinned with water (richer) or plant-based milk (lighter)

Storage & make-ahead

Bull's Milk should be consumed immediately after preparation. Do not store mixed; spirits and milk will separate.

Equipment

cocktail shaker or mixing glass · jigger for measuring

Can I make Bull's Milk without brandy?

Yes; substitute additional rum or use cognac. The brandy provides depth, but rum alone will work in a pinch.

Should Bull's Milk be served hot or cold?

Traditionally served cold over ice, though some variations are served warm. Check your source recipe for the preferred method.

What type of milk works best?

Whole milk creates the richest texture. Low-fat or plant-based milks will be lighter; adjust sweetness to taste.

How do I dissolve the powdered sugar?

Stir it into the spirits first, then add milk and ice to avoid grittiness.

Can this cocktail be batch-prepped?

Mix spirits and sugar ahead; add milk and ice just before serving to prevent separation.