Prep Time 30 minutes mins
Cook Time 35 minutes mins
Resting Time 1 hour hr 15 minutes mins
Total Time 2 hours hrs 20 minutes mins
For best rise, keep your choux dough on the stiffer side; if it spreads when piped, mix in 1–2 teaspoons more flour while still warm. Bake on a silicone mat or parchment without greasing to prevent slipping, and avoid opening the oven during the first 20 minutes. If the batter seems too thick after adding three eggs, lightly beat the fourth egg and add just enough to reach the thick V ribbon. Warm the cream before adding to the caramel to minimize sputtering, and cool the toffee glaze until it clings to a spoon so it won’t run off the eclairs. You can bake shells a day ahead and re-crisp at 160°C for 5–8 minutes, then cool before filling. Store filled eclairs refrigerated and serve within 24 hours for the best texture.