There's no specific recipe for this one, it's one you adjust for seasoning and personal taste. I used a half block of firm tofu and mashed with a fork.
Then add mayo, Dijon mustard, chopped cornichons (with a tiny bit of the pickle juice), nutritional yeast (nooch), tumeric, salt, black pepper and kala namak (black salt). Kala namak adds an egg flavour. 100% true. It’s not something you can buy from the mainstream supermarkets but readily available at health stores or online.
There were no measurements used for this but you could start with roughly a tablespoon of the mayo, mustard, nooch and 1/2 teaspoon of kala namak and tumeric, then adjust and season to taste.
Notes
Kala namak or Himalayan Black Salt is perfect for replicating the taste of eggs. It's not typically available in supermarkets but readily available in health food stores.