Start with clean, well-dried leaves and use high heat for the shortest time possible. Heat a wide skillet over medium-high heat, add a small amount of oil or butter, and once shimmering, add the spinach in batches if needed so the pan stays hot.
Sauté briefly: toss or stir constantly for 1–3 minutes until leaves just wilt. Remove from heat immediately to stop cooking and preserve color and texture. Finish with a splash of acid like lemon juice or a light vinegar to brighten the flavor and help keep the green tone.
Tips and common steps:
Serving ideas: serve immediately as a side, fold into pasta, top with grated Parmesan, or mix into eggs. The brief cook preserves nutrients and gives a tender, vivid result.