Ottolenghi's salted caramel macaroons.

Al-fa-jaw (alfajor)

My Spanish is rubbish so I couldn't pronounce these puppies correctly while I was in Argentina but I loved them nonetheless. Think dulce de leche (sickly sweet evaporated condensed milk) sandwiched with yummy biscuits and coated in chocolate. Mm mm. Probably has the total recommended daily calorie intake in one bite but well worth the indulgence.