Kenji Morimoto’s recipe for miso leek custard tart with fennel slaw

Jammy leeks, savoury sweet chawanmushi and toasted sesame seeds make this flaky pastry dish feel decadent and special

This savoury custard tart celebrates some of my favourite flavours (and dishes): jammy miso leeks, savoury-sweet chawanmushi (a Japanese steamed custard flavoured with dashi) and toasty sesame seeds, all enveloped in flaky pastry. It feels decadent, so it’s best served with a simple fennel salad, zingy with apple cider vinegar and mustard. It’s excellent eaten while still warm from the oven (be patient!), but even better as leftovers, because I have a soft spot for cold eggy tarts.

Ferment: Simple Ferments and Pickles, and How to Eat Them, by Kenji Morimoto, is published by Pan Macmillan at £22. To order a copy for £19.80, visit the guardianbookshop.com