New Potatoes with Uni Butter

Potatoes are not uncommon in Japan, but are mostly included in dishes like katsu curry. As potatoes are such an essential part of most variations of Western cuisine, I am including one of my favourite umami-packed spuds. This recipe works well with small earthy potatoes like Charlotte or Anya, freshly dug, scraped clean with a small herb knife and served with the skin on. Sea urchin, also called uni, is a spiky shellfish typically fished from Japanese or Canadian waters. The shell is carefu