In this behind-the-scenes bonus, I talk with executive chefs Sian Owen and Joseph Trivelli about the challenges and rewards of cooking for hundreds of guests to celebrate the Tate Modern's 25th birthday. We pay tribute to the tireless work of those who made it happen and reflect on grating kilos of parmesan and zesting endless lemons.

Ruthie's Table 4, made in partnership with Moncler.

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