How do say yummy in French?

There isn't a direct translation for "yummy" in French that captures the same informal, childlike delight. However, depending on the context, you can use these options:

Informal & Playful:

* Miam! (mee-am) - This is the most common way to express "yummy" in a fun and casual way.

* Délicieux! (deh-lee-syoo) - This means "delicious" and is slightly more formal than "miam."

* C'est bon! (say bon) - This means "it's good" and is a more general expression of approval.

* Hum! (oom) - This is a simple sound of enjoyment, similar to "mmm" in English.

Formal & Descriptive:

* Délicieux! (deh-lee-syoo) - This is a more formal way to say "delicious."

* Excellent! (ex-seh-lahn) - This means "excellent" and is a more formal way to express enjoyment.

* Savoureux! (sah-voo-roo) - This means "savory" and is used for dishes that are rich in flavor.

* Exquis! (ex-kee) - This means "exquisite" and is used for dishes that are exceptionally delicious.

Ultimately, the best way to say "yummy" in French depends on the context and the tone you want to convey.