Stir the ground
almonds and sugars together in a bowl until evenly
mixed. Make a well in the centre and add the lemon
juice, almond essence and enough egg or egg white to
mix to a soft but firm dough, using a wooden spoon.
Form the
marzipan into a ball. Lightly dust a surface
with icing sugar and knead the marzipan until
smooth. Wrap in clear film or store in a
polythene bag until needed. Tint with food
coloring if required.