Who knew Matthew McConaughey was such a foodie? Well, we did. Before he went viral for his incredibly unique tuna salad-filled with frozen peas, apples, and wasabi mayo-and his hilarious pantless ads with his wife, Camila Alves McConaughey, for their tequila Pantalones, the actor was dropping nuggets about his love for food for years. That includes how he builds the perfect burger (hint: it involves a packet of onion soup mix).