Dissolve 1 tablespoon sugar and yeast in 1/2 cup warm water. Let it sit until creamy (about 5-10 minutes).

In a large bowl, combine vegetable oil, 2 1/3 cups warm water, salt, and 4 tablespoons sugar.

Add the yeast mixture to the bowl and mix well.

Gradually mix in the all-purpose flour and whole wheat flour to form a dough.

Place the dough in a buttered bowl and turn to coat.

Cover the bowl with a damp tea towel.

Place the dough in a warm place to rise for 1 1/2 hours, or until doubled in size.

Once the dough has risen, gently punch it down to release air.

Form the dough into balls about the size of eggs.

Roll each ball flat to make ovals about 1/4 inch thick.

Heat oil to 350 degrees F (175 degrees C) in a deep fryer, pot, or electric frying pan.

Carefully fry the doughnuts one at a time until light brown on both sides (about 2-3 minutes per side).

Place the fried doughnuts on paper towels to drain excess oil.

While the doughnuts are still hot, sprinkle with a mixture of white sugar, ground cinnamon, and lemon juice.