1 Combine The Milk, 1 1/2 Cups Of The Cream, Sugar, Brown Sugar, Instant Coffee, Espresso Powder (If Using), Vanilla And Salt In A Medium Saucepan. Heat The Base Until It Begins To Steam, Whisking Continuously. 2 When The Base Begins To Steam, Pour One- Half Cup Out Of The Pan And Into The Egg Yolks, Whisk Immediately. When Completely Combined, Add The Yolk Mixture Back Into The Rest Of The Of The Base, And Heat Until The Mixture Reaches 170