Cut zucchini into matchsticks that are about 1/2" thick.

Spread the zucchini sticks on a cutting board and sprinkle with salt. Let it sit for 10 minutes. Salt will pull out the water from zucchini and prevent it from turning into mush when stir-frying.

Place zucchinis in a colander or a wire mesh and rinse with cold water. Pat dry with a paper towel.

Heat cooking oil in a nonstick pan over medium heat. Add zucchinis and cook for a couple of minutes while stirring until zucchinis start to soften but are partially raw.

Add garlic and fish sauce to taste and stir fry for another minute. Stop cooking when zucchinis still have some firmness.

Transfer zucchinis to a bowl and mix in sesame oil and sesame seeds.