Using the small holes of a box grater to finely grate the garlic so that it makes a paste, then add it to a medium sized bowl.
Grate the onion the same way so that you get about ½ teaspoon of grated onion and its juice, then add it to the bowl.
Use the large holes of the box grater to grate the cucumber. You should end up with about ¾ cup of grated cucumber. Add it to the bowl.
Add the dill and yogurt to the bowl, season with salt and mix to combine. Add a teaspoon of lemon juice, taste, and add more as needed.
Serve immediately or store in the refrigerator for up to 5 days.
