Es Kopi Karamel Asin Buatan Sendiri

Bahan-bahan (5 porsi)

• 1 cup gula pasir
• 1/4 cup air
• 3/4 cup krim kental
• 3 Tbsp butter*
• 1/2 tsp fine sea salt
• 1/2 tsp ekstrak vanila
• 5 -6 cups strong coffee