Herby Potato cake

Ingredients

• 2 large waxy potatoes
• 1/2 red onion
• 1 egg
• 40g spelt flour (plain can be used)
• Large pinch of salt
• Flavourings:
• 1/2 teaspoon of sumac
• Zest from half a lemon
• 1/2 teaspoon of Dulse seaweed (or other seaweed), ground
• 1 tablespoon of chopped dill
• 1 tablespoon of chopped chives
• Toppings:
• Smoked salmon
• 4 tablespoons of creme fraiche
• 1 teaspoon of chopped dill