When it comes to lunch, many of us forego decadence. A kale Caesar or a quinoa and lentil bowl will do for your midday meal routine, sure. But what if you could make a lunch so special, it will make you want to use a silk napkin and a 24-karat gold plate? We’ve all had some halfway decent sandwiches in our lives. Your mom’s grilled cheese, the Italian sub from that spot two blocks from your office, that 100 banh mi from your favorite Vietnamese hole-in-the-wall. But this sandwich by chef Curtis Stone of LA’s Gwen and Maude might just blow your mind. It starts with seared flatiron steak and foie gras, so you know from the get-go that it’s[…]