Specialty Seafood Markets: These markets often have a wide selection of fresh and preserved seafood, including salt mackerel.
Asian Grocery Stores: Salt mackerel is a common ingredient in many Asian cuisines, so you'll likely find it at Asian grocery stores.
Fishmongers: If you're lucky enough to have a local fishmonger, they might carry salt mackerel.
Online Retailers: Several online retailers sell salt mackerel, both fresh and preserved. Look for reputable websites that specialize in seafood.
Local Farmers' Markets: Depending on your location, you might find salt mackerel at local farmers' markets, especially those with vendors who specialize in seafood.
Note: Salt mackerel can be found both fresh and preserved. If you're looking for the preserved variety, you'll often find it in jars or tubs.
Before purchasing, make sure to check the quality of the salt mackerel and ask about its origin and freshness.