3: Then add 250 g flour. Note: it is important to begin by pouring in the liquids to avoid forcing the blender motor.
4: Mix on medium speed...
5: ...until the batter is evenly mixed.
6: Your pancake batter is ready for use.
Remarks
If you do not have a blender, you can use a whisk. You will find plenty of recipes that tell you to leave the batter to rest, but having tried both ways (resting / not resting), I have not found that it makes any difference. A variation worth trying: replace half the flour with chestnut flour.