This week, we welcome chef Santiago Lastra back to the studio to discuss his new London opening, Fonda, inspired by Mexico’s laidback eateries. Also in the programme: Monocle’s Petri Burtsoff meets Finnish chef Sami Tallberg to learn about the transformative flavours of fresh-foraged herbs. Plus: Monica Lillis heads to Lulu's, a South London neighbourhood restaurant taking the area’s culinary reputation to the next level.