Take a mixing bowl. Add milk, cream and sugar. Whisk well until sugar dissolves fully. This step is important for smooth texture. Make sure there are no sugar grains left. A smooth base gives creamy gelato.

Now add instant coffee to the mixture. Stir well until fully mixed. The coffee should dissolve completely. This gives a rich and bold flavor. You can adjust coffee amount for stronger taste.

Pour in vanilla extract and a pinch of salt. Mix again. These small ingredients enhance flavor. Vanilla adds sweetness and aroma. Salt balances everything nicely. Do not skip this step.

Pour the mixture into a freezer-safe container. Cover it well. Place it in the freezer for at least 12 hours. It should be fully frozen before using the Ninja Creami.

Take out the frozen base. Place it into the Ninja Creami machine. Use the gelato setting. Let the machine do its magic. It will turn the solid block into creamy gelato.

Check the texture after first spin. If it looks crumbly, run the re-spin cycle. This makes it smoother. You can also add a splash of milk for extra creaminess.

Scoop the gelato into bowls. Serve immediately for best taste. You can add chocolate chips or nuts. Enjoy your homemade coffee gelato.