Wash and clean the radishes and cut them into thin sticks. Wash and clean the purslane and drain well. Mix mustard, honey and vinegar. Fold in 4 tablespoons of oil, season to taste with salt and pepper
Peel and grate the navettes. Stir egg replacer powder and 10 tablespoons cold water until smooth. Mix flour and baking powder. Stir in milk and egg substitute, season with salt and pepper. Cut half of the cress from the bed. Stir the cress and the grated navette into the dough
Heat 2-3 tablespoons of oil in portions in a large frying pan. Fry approx. 16 blinis for 5-6 minutes, turning them over, until golden brown. Remove the blinis from the pan and keep warm
Cut the remaining cress from the bed. Mix the radish, cress and vinaigrette. Arrange blinis, purslane and radish vinaigrette on plates