Soupy Rice with Celeriac and Chestnuts

“You will not get blown away by this,” Nigella Lawson warns in the head note that accompanies the recipe for this wintry soup. “This is not to disparage it: it is a favorite in my house,” she adds. “There’s just something quiet and lovely about it that seems to still the air around you as you eat.”

Honestly, this is exactly what I’m looking for in a good…