Rinse fresh spinach thoroughly under cold water, trimming the stems and slicing into 2-inch pieces.

Add sliced spinach to boiling salted water for about 30 seconds until wilted, then transfer to ice water.

Let spinach cool in ice water for a couple of minutes; then gently squeeze out excess water.

In a mixing bowl, combine spinach with minced garlic and green onion, then drizzle with soy sauce and sesame oil.

Sprinkle toasted sesame seeds over the top before serving.