In Kagawa, udon is not a staple but an identity. Udon Prefecture is the prefecture's own official nickname, not a joke. Nakano Udon School's Takamatsu campus turns that pride into a single lesson: ingredients and tools provided, a bowl of Sanuki udon made by hand from mixing and treading the dough through rolling, cutting and boiling, then eaten on the spot or taken away.
The useful number is 500, the top of the price band the school publishes, which runs from 15 guests to 500. Very few food experiences quote for a party on that scale, and this one breaks ice by design: treading dough underfoot is earthy and funny, and it makes people laugh with no language in common. Kagawa's most representative flavor sits on top of the lowest possible barrier to entry.
When a group is too big for anything else, everyone still makes, eats and laughs together. Paired with island-hopping in the Seto Inland Sea and the art of Naoshima, an Udon Prefecture itinerary gains its closest look at daily life here.