Place water in a very large pot or Dutch oven and bring to a boil over high heat.

Add spinach and cook, stirring frequently, until completely wilted, 2 to 3 minutes.

Transfer to a colander and let stand until cool enough to handle. Squeeze out excess water.

Coarsely chop the spinach.

Place in a bowl and mix in sesame seeds, soy sauce, sesame oil and garlic.

Serve at room temperature.