Step 1Wash the radishes well and rub dry with paper towels. Discard any yellow or wilting leaves, but keep the stems intact. If the radishes are larger than 1 inch in diameter, halve or quarter lengthwise.
Step 2Melt the coconut oil either by heating in a small saucepan over low heat or microwaving in a small bowl in 5-second increments.
Step 3Line a large plate or rimmed baking sheet with parchment or wax paper. Dip the bottom half of a radish into the oil, shake off excess, then sprinkle the oil-coated half with some sesame seeds and a tiny pinch of salt. Put on the prepared plate. Repeat with the remaining radishes, oil, sesame seeds and salt.
Step 4Refrigerate uncovered until the oil hardens, at least 5 minutes. Serve cold.