Brew the coffee: Pull 2 shots of espresso or brew 1/2 cup very strong coffee. Keep it hot.
Warm the milk: In a small saucepan over medium-low heat, warm the milk until steaming.
Do not let it boil.
Add white chocolate: Stir in the white chocolate and a pinch of salt. Keep stirring until fully melted and smooth. If using bars, chop finely so it melts quickly.
Add vanilla: Stir in vanilla extract, if using.
Taste and adjust sweetness by adding a few extra chocolate chips if you like it sweeter.
Froth (optional): Use a handheld frother, whisk, or tightly lidded jar to create light foam. This adds that café-style texture.
Combine: Pour the hot coffee into your mug. Top with the white chocolate milk mixture and stir gently to blend.
Finish: Add whipped cream and a sprinkle of shaved white chocolate or cocoa powder, if desired.
Serve immediately.