# Heart of Glass

Troy Sidle’s room-temperature Manhattan-scaffa measures its own dilution, saturates bourbon with Cynar and bitters, and turns a whiskey rinse into ritual.

Strength: 25% ABV before dilution

## Ingredients

- 52.5 ml [Bourbon](https://stirred.fyi/ingredients/bourbon.md) — Reserve 7.5 ml to coat the glass; use a well-aged bourbon for the rinse.
- 22.5 ml [Sweet vermouth](https://stirred.fyi/ingredients/sweet-vermouth.md) — Keep the opened bottle refrigerated and use it fresh.
- 22.5 ml [Cynar](https://stirred.fyi/ingredients/cynar.md)
- 17 drops [Angostura bitters](https://stirred.fyi/ingredients/angostura-bitters.md)
- 15 ml [Water](https://stirred.fyi/ingredients/water.md)

## Glassware

Rocks glass

## Garnish

- Orange twist — Retain the expressed peel in the drink.

## Method

1. Coat the inside of a room-temperature rocks glass with the reserved 7.5 ml bourbon, then discard any excess.
2. Combine the remaining 45 ml bourbon with the vermouth, Cynar, bitters, and water without ice, then express a broad orange peel over the mixture.
3. Pour into the prepared glass at room temperature.

## Related drinks

- [Left Hand](https://stirred.fyi/cocktails/left-hand.md): Bourbon, Campari, and sweet vermouth gain dark cacao and spice from mole bitters in Sam Ross's late-2000s bridge between Boulevardier and Manhattan.
- [Little Italy](https://stirred.fyi/cocktails/little-italy.md): A bittersweet Manhattan variation pairing rye and sweet vermouth with earthy, herbal Cynar.
- [Boulevardier](https://stirred.fyi/cocktails/boulevardier.md): A whiskey-driven bittersweet classic with Campari and sweet vermouth.
- [Rabo de Galo](https://stirred.fyi/cocktails/rabo-de-galo.md): A robust Brazilian aperitif bringing cachaça together with sweet vermouth, earthy Cynar, and aromatic bitters.
- [Greenpoint](https://stirred.fyi/cocktails/greenpoint.md): A Manhattan variation layering rye and sweet vermouth with herbal Yellow Chartreuse.
- [La Louisiane](https://stirred.fyi/cocktails/la-louisiane.md): A deeply aromatic New Orleans rye cocktail layered with sweet vermouth, Bénédictine, absinthe, and Peychaud’s bitters.
- [Tipperary](https://stirred.fyi/cocktails/tipperary.md): An Irish whiskey cocktail enriched with sweet vermouth, Green Chartreuse, and aromatic bitters.
- [Bitter Giuseppe](https://stirred.fyi/cocktails/bitter-giuseppe.md): Stephen Cole's low-proof modern classic makes earthy Cynar the base, lengthened with sweet vermouth and sharpened by lemon and orange bitters.

## References

- Canonical page: https://stirred.fyi/cocktails/heart-of-glass
- Photograph: https://stirred.fyi/assets/cocktails/heart-of-glass-ee5127aa.webp
- Recipe source: https://www.boxesandbooze.com/cocktails/heart-of-glass