Cured Egg Yolk: The Ultimate Umami Dust Recipe for Grating

Instructions:

1. Combine the Cure: In a medium bowl, thoroughly mix the coarse sea salt and granulated sugar until homogenous. This 1:1 mixture is robust and balanced.
2. Create the Base: Pour about two-thirds (2/3) of the curing mixture into a shallow container, spreading it into an even layer roughly 1 inch (2.5 cm) deep. Gently tap the container to level the surface.
3. Form the Nests: Using the back of an eggshell or a small spoon, create eight separate, evenly spaced indentations ('nests') in the salt/sugar mixture. These nests should be deep enough to hold the yolk.
4. Separate and Place the Yolks: Carefully crack the eggs and separate the yolks, ensuring they remain perfectly intact. Place one yolk into the centre of each prepared nest.
5. Bury the Yolks: Gently spoon the remaining curing mixture over the yolks until they are completely covered. Use a light hand to ensure they are not dislodged or punctured.
6. Cure in the Fridge: Cover the container tightly (using cling film or a lid) and place it in the refrigerator. Cure for a minimum of 4 days and up to 7 days, checking for firmness after day 4.
7. Remove and Rinse: Once firm and dense, carefully scoop the yolks out and transfer them immediately to a fine-mesh sieve. Rinse them very briefly under a gentle stream of cool water to remove all surface salt and sugar.
8. Pat Dry: Gently pat the yolks completely dry using kitchen paper or a clean tea towel. Preheat your oven to its lowest setting, ideally 150°F (65°C).
9. Bake (Dehydrate): Line a baking sheet with parchment paper, place the dried yolks on it, and bake for 1.5 to 2 hours, rotating halfway. The yolks should feel hard to the touch.
10. Cool and Store: Allow the cured yolks to cool completely at room temperature. Store them in an airtight container in the refrigerator for up to several months.