This cocktail embraces the essence of Calvados, enhanced by subtle bittersweet undertones and brought to full expression through a perfectly balanced mix. The simplicity of this drink allows each ingredient to shine, creating an elegant and sophisticated experience that's perfect for a serene evening.

Ingredients:
- 2 oz Calvados
- 1/2 oz Sweet Vermouth
- 2 dashes Angostura Bitters
- 1/2 oz Fresh Lemon Juice
- Lemon twist for garnish

Instructions:
1. In a mixing glass, combine the Calvados, sweet vermouth, fresh lemon juice, and Angostura bitters.
2. Fill the mixing glass with ice and stir the mixture until well-chilled, typically for about 30 seconds.
3. Strain the cocktail into a chilled coupe glass to achieve a smooth, clear drink.
4. Express the oil from the lemon twist over the drink by giving it a gentle twist, and then drop it in as a garnish.

Serve and enjoy your Normandy Nightfall – a cocktail that is as easy to make as it is to sip, with nuanced flavors that transport you to the apple orchards of Normandy in every glass.