Take a nonstick pan add water, sugar, and fennel seeds and allow it to boil, and continue to boil for 2-3 minutes. Then strain and allow to cool.

Now roughly chop the cucumber with skin. Transfer into a blender jar, add rock salt, chaat masala powder, roasted cumin powder, red chili powder, and little water, and blend to a fine paste. Strain and set aside.

For the spice mix- Take a plate add red chili powder, rock salt, and chaat masala powder, and mix it well.
Now rim the glass with lemon juice and dip in the prepared spice mix.

Now fill the glass with ice cubes and pour a portion of the prepared cucumber mixture then add a portion of prepared sugar syrup and top up with soda.

The spicy cucumber Chilli Cooler is ready. Serve immediately chilled.