"Spring onions can be found year round but, as their name suggests, they're best in spring," says Danielle Alvarez. "The technique for these fritters was taught to me by a Persian chef, but the batter is a straight Japanese tempura. Combined with preserved-lemon mayonnaise, they're a lovely little canapé for a spring feast." Makes 16 fritters.
Note Broad bean leaf tips are available from select farmers' markets; substitute large pea tendrils if they're unavailable.