Peel the avocado and mash it with a fork. Add the lemon juice and mix well.

Set aside a thin strip of cucumber for garnish. Grate the rest of the cucumber using the large holes of a box grater. Sprinkle with salt and place in a strainer to drain.
If you like, you can save the cucumber liquid and drink it.

Grate the onion and garlic using the medium holes of a grater. Finely chop the herbs.

Squeeze the cucumber to remove excess liquid, then combine all the ingredients. Mix until smooth and well combined. Garnish with the cucumber strip and enjoy with grilled meat or however you like.