| Chef Rengarajan Venkatachalapathy is the chef at House of Dosas |
Ingredients
Dosa Crepe
Salmon Stuffing
Method
To make the crepe
Salmon stuffing
All salmon, wild and farmed, are carnivores, or meat-eaters. In the wild, they eat between 10 to 20 pounds of shrimp, krill and small fish to gain one pound of weight. Farmed salmon gain weight much more easily since they don't burn up energy looking for their next meal. For every 3 to 4 pounds of fish based feed, they gain one pound.
So what goes into fish based feed
When salmon were first farmed the diets were primarily all fishmeal and oil--a natural diet, so to speak. Ten years ago this fell to about 80 percent as other feed sources were substituted. Today, on average, fishmeal and oil comprise about half the diet for farmed salmon. Vegetable meal and oil are finding their way into feeds steadily. These feed components, virtually free of PCBs, and offering salmon farmers an alternate and plentiful source of feed get lots of attention. But it's not an easy switch. There are multiple issues that have to be solved: palatability (meat eaters don't always like a lot of veggies), nutrition issues, keeping omega-3 fatty acid levels up, and more.
There are dozens of research projects and tens of millions of dollars spent by the industry on this each year. Each development in the science of salmon feeding research takes a great deal of time and effort, as the developments have to be tested and carefully monitored.
While some things, such as palatability, can be tested quickly, other things, such as rate of gain or maintenance of nutritional characteristics, take longer--sometimes over a year. New developments are tested with a great deal of scientific rigour because further developments rely on these results.
Unlike livestock and poultry, salmon are only given medicated feed if they are being treated for disease and only if under the direction of a veterinarian. In Canada, less than three percent of feed is medicated. Also, it is not used as a growth promoter or as a preventative treatment.
Salmon farming is a young industry but we have made remarkable strides in feeding salmon over the past 10 years. This is the major reason why PCB levels in our stocks are so low--on average 1/100 of the Food & Drug Administration (FDA) tolerance. This is a big part of why farmed salmon is so affordable and why our fish are so rich in omega-3 fatty acids.