boomer

2/3 Dry Gin (1 1/2 oz Beefeater)
2 dash Apricot Liqueur (1/2 oz Rothman & Winter)
2 dash Dry Vermouth (1/2 oz Noilly Prat)
2 dash Lemon Juice (1/2 oz)
1 dash Peychaud's Bitters

Shake with ice and strain into a cocktail glass. I added a lemon twist.

After the Gilda Cocktail, I opened up Pioneers of Mixing at Elite Bars: 1903-1933 and found the Boomer. Obviously this book pre-dates the Baby Boomers by a generation or two for it falls during the General Issue (1900s-1920s) and Silent (1920s-1940s) Generations. During the late 19th century until the 1920s, a boomer was a transient worker who would travel from boom town to the next in search of temporary jobs; this included everyone from bridge builders to thieves. With its ingredients, it reminded me of a few drinks including the Darb, Prudence Prim, and Forty Eight cocktails.
The Boomer greeted the nose with fresh lemon oils along with a fruitiness from the apricot brandy. The sip paired the lemon with the dry vermouth's wine flavor, and the swallow ended drier with apricot notes followed by herbal ones from the gin and Peychaud's Bitters.