Grapefruit Velouté Macaron

Ingredients

• 2 pieces Grapefruit (untreated)
• 10 grains Sarawak black peppercorns
• 1000 ml Water
• 500 g Granulated sugar
• 4 tablespoons Lemon juice
• 1 piece Star anise
• 1 piece Vanilla bean
• 150 g Powdered sugar
• 150 g Almond flour
• 8 g Titanium dioxide powder
• 4 g Warm water
• 110 g Egg whites
• 43 g Mineral water
• 150 g Granulated sugar
• 2.5 g Lemon yellow food coloring (liquid)
• 1.5 g Strawberry red food coloring (liquid)
• 1.5 g Carmine red food coloring (liquid)
• 38 g Mineral water
• 400 g White chocolate 35% (e.g., Valrhona Ivoire)
• 10 g Pink grapefruit zest
• 350 g Plain stirred yogurt
• 105 g Acid yogurt powder (Mediterranean style, Sosa)
• 25 g Milk powder