Making a smaller quantity of salmon: You can make this with smaller portions of salmon. I would not use anything less than around a 250g/8oz fillet, however. Use the recipe scaler to adjust quantities, but then manually recalculate the salt, sugar and cure flavouring quantities to increase everything by 50%. This is to ensure there is enough cure mix to properly cover your salmon.
2. Salt – You must use cooking or kosher salt, not table salt (the grains too fine, it makes salmon inedibly salty). Also, do NOT use iodised salt. The packet will say if it IS iodised. Iodised salt can make the salmon brown.
3. Container – The perfect container size should fit the salmon in snugly but allows it to lie completely flat in the beetroot mixture without excessively contacting the base of the container (which will result in less red colour on flesh). If your container is too large, use scrunched up ropes of paper or foil under the cling wrap along the sides of the container to enable this to happen.
4. Resting overnight for better result – When the salt mixture is initially removed from the salmon, the surface of the salmon (ends, top, sides) is saltier than the very middle. If you leave the washed and dried salmon overnight, the salt redistributes more evenly throughout the salmon flesh and also improves the texture of the salmon (becomes a bit more set, and is easier to thinly slice).
5. Alcohol – Cured salmon gently flavoured with alcohol is a modern classic. It imparts a subtle taste of gin or vodka, gentle enough that even those who dislike these liquors can still enjoy it. However the alcohol is totally optional, and omission will not affect the cure! So if you have kids or cannot drink alcohol, replace alcohol with water (so our our cure blends easily and stays nicely runny).
6. Other sauce options: Fresh horseradish is irritatingly hard to find in Sydney. I get it from the Sydney Fish Markets and sometimes at the local markets. If you can't get it, don't fall back to jarred horseradish. Rather, make a sauce using creme fraiche (sour cream is a back up) mixed with some lemon zest and fresh chopped dill. Another option: Dijon Mustard (a good one).
7. Storage: Salmon keeps for 4 to 5 days after removal of salt (so factor in extra overnight resting if you do that). You can always tell by smelling when fish is past its shelf life - if it smells funky, it's no good! If fish was not previously frozen, it can also be frozen for up to 3 months.
8. Nutrition – Calculated only for salmon cured in vodka. Condiments, accompaniments etc are not included.Another great recipe by recipetineats.com