Salted Salmon
All cooked meats can be salted using 2 pieces of salt (originally 3 pieces in 1.15)
Salt Ore (Outdated)
Naturally spawning salt ore found in the upper regions of a mountain biome (only in versions 1.15.1, 1.15.2, and 1.16.1)
Salted Chicken
All cooked meats can be salted using 2 pieces of salt (originally 3 pieces in 1.15)
Salted Steak
All cooked meats can be salted using 2 pieces of salt (originally 3 pieces in 1.15)
Salt Block (Outdated)
Can be crafted using 9 salt in a crafting table (only in versions 1.15.1, 1.15.2, and 1.16.1. The new salt block is crafted with 4 pieces of salt)