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1
Preheat oven to 300 degrees.
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2
Liberally coat cod with about 3 tablespoons salt on each side, and allow to rest for 15 minutes.
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3
Rinse with cold water and pat dry with paper towels.
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4
Place cod in an 8 by 12 baking dish or jelly roll pan.
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5
Pour olive oil and milk over cod, and lay thyme sprigs and garlic on top.
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6
Cover with foil and bake until fish is just cooked and begins to flake, about 20 minutes.
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7
When fish has cooked, remove cod and reserve thyme and cooking liquid; discard garlic.
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8
While fish cooks, place potatoes in a large pot and add cold water to cover and 2 tablespoons salt.
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9
Bring to a boil and cook until tender, about 20 minutes.
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10
Drain well and return to pot.
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11
Place over very low heat for about 4 minutes to get rid of excess moisture.
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12
Remove from heat; mash in pot until smooth.
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13
In a large bowl, whisk egg.
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14
Stir mashed potatoes, little by little, into egg.
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15
Add leaves (not stems) from reserved thyme.
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16
Using a fork, flake cod and fold it into mashed potatoes until well blended.
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17
If batter is too stiff, mix an extra 1/4 cup to 1/2 cup cod cooking liquid into the remaining batter.
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18
If it does not hold together, add up to 1/4 cup matzo meal.
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19
Season to taste with pepper.
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20
Cover and refrigerate for 30 minutes.
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21
Fill a large skillet with about 1/4 inch vegetable oil, and place over medium-high heat.
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22
Using a 1/2 cup or 1/4 cup measuring cup, measure a portion of cod-potato mixture and shape into a 1/2 inch thick disk.
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23
Coat disks in matzo meal or bread crumbs.
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24
Fry until golden, turning once, about 2 minutes a side.
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25
Repeat with remaining batter and drain on paper towels.
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26
To serve, reheat if necessary on a baking sheet in a 350-degree oven.