McDonald's is offering free McFlurries for its new Caramel Brownie flavor on Tuesday. Here's how to get one.

• McDonald's will give out free McFlurries on May 4.
• No purchase is required to receive a free regular size serving of the new Caramel Brownie McFlurry.

McDonald's will give away free McFlurries on Tuesday following its debut of a new flavor.

The fast-food chain will hand out regular size cups of its new Caramel Brownie McFlurry on May 4. The new flavor, which is characterized as "salty and sweet," was only just released across the fast food chain on Monday. It is made out of vanilla soft serve mixed with brownie pieces and caramel sauce.

McDonald's said the free ice cream mix is for anyone who has mistaken the McFlurry spoon - a hollow plastic scoop - for a straw. The chain announced it would release the new flavor on National Caramel Day in April.

In order to qualify for the free Caramel Brownie McFlurry, customers must download the McDonald's app and register for a free account.

From the account, just provide the offer code for the free McFlurry at the register or through an online order. The code can only be used once per customer. No purchase is required to get the free soft-serve mix.

From Monday to Wednesday, McDonald's customers can also get the Caramel Brownie McFlurry for free via the delivery app Uber Eats with a $15 or more purchase.