Swedish food columnist Daniella Illerbrand remembers her first Taco Friday well. She was 14, and it was the first time her parents, who cooked everything from scratch, decided it was okay to buy ready-made ingredients like tortillas and spices. “That was a big deal for us,” says Illerbrand, who works for Sweden Foodtech, an organization that works with food startups and businesses. “My parents liked traveling, so they were into trying something new.” It was her first real Fredagsmys, or Cozy Friday, a beloved Swedish tradition. Across the Scandinavian country,…