SWEET TOOTH WHO ME ?NEVER !

PUT THE KETTLE ON I FANCY SOMETHING TASTY;
I'M A DUNKER ARE YOU?
I HAVE A CHART OF BISCUITS AND IT'S SET IN ORDER OF THEIR DUNKABILITY
IE;DIGESTIVE =TWO DUNKS
GINGER NUTS =THREE DUNKS
BOURBON =UP TO FOUR MMM
JAFFA CAKES =ONE ! HOWEVER THE DEBATE CONTINUES ON THIS SUBJECT AND THE JURY IS STILL OUT WHAT DO YOU THINK' BISCUIT OR CAKE ?ANSWERS ON A POST CARD PLEASE.
PS MINE'S IS THE STAR BAR CLASSIC FAVOURATE.