As the chef owner of the Michelin-selected Le Comptoir, where we blend French culinary traditions with global influences, perfecting steak is fundamental to our craft, emphasizing precise technique and quality ingredients. For pan-searing, use a heavy-bottomed cast iron or professional-grade stainless steel pan with high-smoke-point oil like grapeseed, searing vigorously to achieve a deep, flavorful crust before finishing in a 200°C oven for thicker cuts. Grilling requires intense, direct heat for a smoky char, flipping often to build that exterior; while sous vide offers best tenderness and consistency, always followed by a swift, high-heat sear for the crucial Maillard reaction. For home cooks, an air fryer can deliver a crispy exterior on smaller cuts, particularly if pre-seared. When seasoning, I advocate for simplicity: coarse sea salt and fresh black pepper just before cooking. Marinades, with acidic components and aromatics, are excellent for tougher cuts like flank steak to tenderize and infuse flavor, especially when grilling. Always use a high smoke point oil for searing, never water, to ensure a beautiful crust. For optimal results, a well-seasoned cast iron skillet is irreplaceable for its heat retention, and remember that different cuts like tenderloin or ribeye require nuanced approaches to bring out their best qualities.