Question: To keep cake moist when rolling.

  Options: 
 A. While still warm, start rolling the sponge with the help of the parchment paper sandwiched in between the sponge. You could also use a kitchen towel or a clean cloth to help you roll easier but it's not compulsory. Roll loosely and keep the edges open of your parchment and/or kitchen cloth to keep it moist.
 B. While still warm, start rolling the sponge with the help of the parchment paper sandwiched in between the sponge. You could also use a kitchen towel or a clean cloth to help you roll easier but it's not compulsory. Roll tightly and tuck the edges of your parchment and/or kitchen cloth to keep it moist.
Answer: B