Hints for baking Swiss Rolls

Pan size matters! Too thick or thin a cake layer will cause you grif when rolling, so measure. The pan should be flat and shiny, with sides. Jelly roll pans come in a lot of sizes. A 17 inch (43 cm) x 12 inch (30 cm) takes a 4 egg recipe. 10½"x15½" (26½x39½cm) jelly roll pan takes 2-3 eggs.

Grease the pan, or spray with nonstick spray, line with parchment, and then grease and flour the parchment paper (or spray with Baker's Joy). Set aside. Use waxed paper, parchment paper or lining papare to line the top and sides. If you must overlap, allow a couple of inches, so the cake doesn't split at the paper seam when you remove it from the pan.

To make the batter, you may have to separate the eggs which is easier to do when thay are cold. But they beat MUCH better at room temperature, it takes about 20 minutes to get there.
Beating the egg yolks and egg whites separately produces a more flexible sponge cake that doesn't crack when rolled.

Beat the egg yolks in a small bowl. The small bowl is necessary to give maximum volume to eggs.
While adding the granulated white sugar to the yolks, beat on high speed until pale, thick and fluffy. I add about a tablespoon at a time. This will take 5-7 minutes. When you slowly raise the beaters the batter will fall back into the bowl in slow ribbons. The mark from a spoon dragged through the mixture doesn't disappear.

Add your flavoring or extract to the egg yolks, but only after they are beaten thick.

Use cake flour or other soft, low gluten flour. If not available, add corn starch to prevent the cake from breaking up when it is rolled. Substitute some portion of flour with corn starch, to a maximum of 1/3 of flour.

Sift before measuring, sift all together, and then sift into the egg mix.

Replacing some of the cornstarch/flour mixture with ground sliced and toasted almonds gives the sponge cake a pretty speckled effect with a subtle almond flavor. Cool toasted almond slices completely, grind with 1 tablespoon of flour to prevent clumping.

Put the eggs in a larger bowl to add the flour. Sift the flours over the egg mixture, use a spatula to lightly fold the flours. Fold the egg mixture and the flour mixture together very gently, you are trying not to knock any of the air out of the eggs. Heavy handling at this stage will give a flat, tough sponge.

Spread the cake batter with a spatula, lightly, so you don't press out the air. It should be very flat or even a bit higher at the sides than in the middle.

ALWAYS fully preheat the oven. It only bakes about 7-20 minutes, and the oven needs to be exact.

Check the sponge is cooked by carefully running your hand over the top. It is cooked if your hand leaves a slight mark, which disappears quickly and springs back. Don't try to judge by color.
When cooked, the sponge will come away from the sides of the tin very slightly. A toothpick inserted in the center will come out clean. An under-baked roll will be sticky and will be easily damaged in the process of rolling and unrolling. An overbaked roll will crack when you roll it; it can still be cut into squares and iced to make fine petit fours or tea cakes.

When the cake finishes baking, immediately remove layer from the pan, remove the lining paper and let cool on wire racks. Otherwise, moisture will be trapped in the cake, resulting in a wet, damp texture.

When cool, flip or slide the cake layer onto a large piece of lining (wax) paper. You may sprinkle this with sugar. Do NOT use foil. Do not leave the cake too long after it has completely cooled. If you do leave it, the cake will become too dry and break during roll up.

An alternate cooling/ rolling trick, if you are anxious about flipping the cake onto the clean lining paper: turn out immediately onto a cake rack covered with a clean dry dish/tea towel (non-terrycoth dish towel) lightly sprinkled with 1/4 cup confectioner's sugar, peel off the lining papers. When cool you can use the towel to move or roll the cake layer.

If the parchment paper sticks to the cake, lightly brush the back of the paper with a little warm water, allow to stand for a few moments, then peel the paper from the cake.

Trim away the crusts/edges which are thinner and more dry, they interfere with the rolling.
Cut a few slits at one edge of the cake, along the edge that will be at the center of the roll. Be careful to cut the slits half-way through the cake only. This increases the flexibility of thyis center strip.

Use the towel or lining paper as a lifter or guide to roll up the cake from the slit edge.
Once you have filled and rolled it, stand the swiss roll, still wrapped in the towel or lining paper, for at least 30 minutes to make sure that the swiss roll will not unroll later.

Wrap in plastic wrap and refrigerate for 6 hours or overnight to set the filling and make it easier to slice. However, since it tastes best if served at room temperature, remove to room temperature at least one hour before serving.

Cut the cake into slices using a serrated knife.