Step 1

For crumpets, place yeast and sugar in a bowl, then whisk in 150ml lukewarm water. Stand in a warm place until frothy (15 minutes). Using an electric mixer fitted with a paddle attachment, combine flour, semolina, cream of tartar, milk and 1/2 tsp salt. Add yeast mixture and mix on low speed until combined (8 minutes). Leave mixture to prove until it starts to form bubbles (1 hour). Add bicarbonate of soda and mix on highspeed until well combined (2 minutes). Transfer to a jug.

Step 2

For pickled onions, combine vinegar, sugar and 3 tsp water in a small saucepan over medium heat and bring to a simmer. Set aside to cool. Combine grated onion in a small bowl with cooled pickling liquid and cover until required.

Step 3

For saffron egg mayonnaise, place saffron and 2 tsp warm water in a bowl. Set aside to infuse (5 minutes). Blend saffron mixture with remaining ingredients in a small blender until smooth. Season to taste.

Step 4

Lightly grease 4 non-stick egg rings and place in a large non-stick frying pan. Lightly spray pan with oil. Heat over medium heat. Sprinkle a little extra semolina into each ring, then pour 2 tbsp batter into each ring and cook until holes form on the surface and the top is cooked to the centre (4-5 minutes). Remove rings, then turn crumpets and cook until base is golden (1 minute). Remove crumpets from pan and keep warm while you repeat process with remaining batter.

Step 5

Serve crumpets topped with saffron egg mayonnaise, pickled onion, salmon caviar, chives and chive flowers.