The Marks and Sparks was selling Victoria sponge premix for £0.8. Clearance.
So well, I just had to.
This is in no way an ideal! But I thought it might be interesting to see the difference between the pans.
1 & 2 are the same unbranded anodised aluminium. 3rd: Parrish magic line. 4th: Nordic ware. All filled with equal amounts of batter weigh out.
No baking strips. I rotated the pans in my oven at half time.
3rd & 4th took 2-3 mins longer to cook.
I also forgot to knock the pans. Seems to have too many bubbles.
Not sure if the presence of more bubbles for 3rd and 4th is due to the slower heating action of the pans.
View attachment 3820
View attachment 3821
The air holes is called tunneling. I have a lot of conversations off line. I was just explaining the cause of of tunneling to someone to had a lot tunneling in their cakes.
Over mixed batter: this is the number one cause of tunneling; batter is mixed too long and/or too high a speed—many bakers don’t pay attention to mixer speed and don’t set a timer. I always set a timer. My timer actually has a stopwatch function on it. so when I mix my batters I use the stopwatch function so I can see the lapsed time that I am beating the batter.
Too much leavening: this is the second most common cause of tunneling; ratio of baking powder/soda is too high.
Not sifting dry ingredients: leavening must be sifted in to evenly dispersed into the flour. Young bakers think sifting is old school and a waste of time. That leavening needs to be properly disbursed throughout the flour. SIFT. Back in the day we were taught to sift three times. That is a habit I still practice to this day.
Finished Batter Temperature too high AND batter Over-mixed: batter temperature after mixing should NOT exceed 68°F-72°F (20°C-22°C); home bakers are not even aware of the standards for finished doughs and batter temperatures.
Note: The temperature range listed here are for commercial cake mixes; culinary schools teach 68°F (20°C) as the finished batter temperature for cakes mixed from scratch. To achieve a finished batter temperature of 68°F (20°C) butter is creamed at 65°F (18°C).
Less common causes of tunneling:
Insufficient Sugar: sugar inhibits gluten development; too little sugar in the formula will allow for too much gluten to development in the batter during normal mixing.; that in turn will allow tunneling to occur during baking.
Too much liquid: too much liquid in the batter allows the batter to develop (CO2 activity, starch gelatinization, protein denaturation) to quickly in the early stages of baking, and tunneling occurs
Batter curdled: did not create an emulsion
Add eggs and liquid gradually.
Eggs too cold and butter too warm: the significant difference in temperature between the eggs and the butter resulted in a failure of the water and fat in the eggs and butter to emulsified
Flour too strong: protein level in the flour was too high, and the batter was mixed too long
Hydration too low: formula does not contain enough liquid