Cold pressed, whole food fish oil supplement. Tollden Gold comes from non-threatened species of wild-caught, small, plankton-feeding fish (anchovies, mackerel and sardines) that are low on the food chain with the lowest levels of PCBs and is cold pressed immediately after harvest. No chemicals or extreme heat are used during the extraction process. The idea is to preserve vital nutrients in their whole state. Tollden Gold has a naturally occurring ratio of 18:12 EPA to DHA.