Thanks to everyone that replied. Looks like I am going to give the Canola-oil a whirl for my next batch of fillets! Can hardly wait. Thanks again Walleyeman.
I've given this little tip before, but it's been a while since the last time so I'll give it again.
As a former chef in industry (for 12 of 15 years I was in that industry) what I was trained to do to ensure a nice crispy batter was when you're placing the fillet in the oil, after you dip it in the batter, let the excess drip off back into the batter bowl, then holding what would be the tail end of the fillet between your thumb and index finger, lower the thicker head end of the fillet into the oil slowly moving it back and forth until it starts to float then release the rest of the fillet into the oil. Once it starts to float again (doesn't take long) let it cook for another 15 seconds or so, then flip it, let it cook for 30-40 seconds, then remove it from the oil and let it cool slightly on a Drip rack (your wife should have one for her baking IF she does any baking.) What you're doing is blanching it. Once you have all the fish you're planning to cook blanched, you let the oil heat up again (again, this doesn't take long) and then depending on the size of the fryer you have and the basket(s) you're using to cook them in (if any) you can put the fish back in to finish cooking, (takes at most another 2-3 minutes depending on how large and thick the fillet is, they don't stick to each other, they cook evenly, and once they're all floating, they're done, you take them out of the oil, let the excess oil drip off and serve.
This is the batter recipe I use.
3/4 cup all purpose flour
2 tablespoons corn starch
1/2 tablespoons baking powder
1/4 teaspoon baking soda
1/4 teaspoon salt
3/4 cup water
Step 1
Mix the dry ingredients together.
Along with any seasonings you wish, Stir 3/4 cup flour, 2 teaspoons of baking powder and 1/2 teaspoon of salt together in a large bowl.
Step 2
Add water and stir to combine. To make into beer batter, substitute beer for water. Use warm beer for best results Use immediately.
Step 3
This is a thick batter, but I always use a little more water, beer, or maybe a little white wine to thin it a little bit to the consistency I want it to be.
Step 4
Dip fish into another bowl with flour (seasoned if and how you wish) then an egg wash, then dip the fish into the batter and deep fry. Use also for vegetables or onion rings. Coat fish fillets completely.
Step 5
Deep fry until golden brown.