McDonald's
A McDonald's restaurant is seen Sept. 10, 2016 in Gettysburg, Pennsylvania. Photo: Getty

McDonald's has officially included its secret Shamrock Shake with a twist in the menu. The fast-food joint is coming up with the new line of "Chocolate Shamrock Shakes" and the original mint drink is now available with a dash of chocolate.

The shakes, which are available for a limited time, have already been rolled out to some restaurants starting Wednesday. However, not all McDonald’s franchises are participating.

Apart from the original flavor — vanilla soft serve mixed with mint-flavored Shamrock Shake syrup, McDonald has added four new variants. Below are the new flavors that are available, according to Brand Eating. The original Shamrock Shake is also getting an upgrade with green sugar crystal sprinkles.

Chocolate Shamrock Shake: The drink comes in layers, with chocolate shake at the bottom and Shamrock Shake on top. It is also topped with whipped cream, green sugar crystals, and chocolate syrup.

Shamrock Chocolate Chip Frappe: This is blended with Shamrock Shake syrup, topped with whipped cream, green sugar crystals, and chocolate syrup.

Shamrock Hot Chocolate: A combination of hot chocolate with Shamrock Shake syrup.

Shamrock Mocha: A mocha that usually is prepared with chocolate syrup, espresso, and steamed milk, will now be served with a mix of Shamrock Shake syrup.

To locate McDonald's stores near you visit here.

Below are some social media reaction on the inclusion of Shamrock Shakes in McDonald's regular menu.