This is one of those recipes that just makes radishes feel exciting again. They get soft and buttery in the pan, a little nutty from the browned butter, and the greens crisp up into the best salty little chips you will want to steal straight from the skillet. I love these with eggs and toast in the morning, but they also work really well as a simple side for dinner when you want something green but not...boring.
Wash 1 pound of breakfast radishes well, halve them lengthwise, aiming to keep the greens intact. (If you lose a few, it's totally fine).
Set a medium pan over medium-low heat. Add 2 tablespoons of salted butter and let the butter fully melt. In batches of about 4-5 radish halves, add the radishes cut-side-down, press the greens into the butter so everything is making contact with the surface of the pan.
If you are nervous, set a timer for 2 minutes and 30 seconds. Let the radishes sizzle in the butter, then flip them over to let them fry for another 30-60 seconds. The greens should look darkened and crisp, but not brown. The radishes should look lightly browned. Transfer these to a plate.
About halfway through your batches you should see that there is not longer that much butter in the pan. This is a good thing! Add another 2 tablespoons of salted butter and continue the pan-frying.
When all the radishes have cooked, top them with the 1/4 teaspoon of lemon zest and squeeze over the lemon juice.
Sprinkle with a generous pinch of flaky salt, and serve!