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1
TO MAKE THE DOUGH: combine flour and soda.
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2
Make a hole in the centre and add beaten egg and egg whites and 1/4 cup of water.
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3
Gradually mix with a knife, working from the inside out and adding more water in small amounts (about 1/4 cup at a time).
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4
When well-mixed, divide into 6 balls.
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5
Knead with your hands and throw dough on counter top several times.
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6
With a small amount of flour, add 1 Tbsp.
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7
of oil to each roll.
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8
Knead until smooth and elastic enough for a thumb print to stay for a few seconds in the dough.
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9
Place dough in a pie plate and pour remaining oil over balls to soak.
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10
Let stand at least 1 hour before using.
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11
FOR THE FILLING: Saute onions in vegetable oil.
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12
Mix potatoes with onions, eggs, salt and pepper.
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13
TO ASSEMBLE KNISHES, roll dough with a rolling pin; press with hands until very thin.
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14
Holding dough in your hands above a table, begin stretching in the middle and working towards the outside.
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15
Each ball of dough should be as thin as paper (about 1/16 of an inch).
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16
Form potato mixture into a long slender roll, about 1 inch in diameter.
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17
Roll dough around potato mixture.
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18
Seal.
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19
Preheat oven to 400 F.
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20
Cut rolls into 1 1/2 inch pieces.
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21
Push ends partially shut and place ends down on a shallow greased baking sheet.
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22
Bake 45 minutes in a 400 F.
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23
oven, until lightly browned.
