Lemon Ginger Sour

Simple Syrup

• 225 g sugar
• 30 g fresh ginger, peeled
• 1 tsp edible lavender flowers (可选的)
• 225 g water

Lemonade

• 3 lemons, divided (2 peel and pith removed, 1 whole)
• 100 g sugar
• 595 g water

Foam

• 4 egg whites (see Tip)
• 300 g gin, any type
• 225 g ice cubes
• 1 lemon, cut into half moons, to garnish