The Art of French Pastry

rim to create a vacuum.
Repeat this every day for
10 days. On the tenth day,
after you’ve used up the
last of the sugar, add 50
grams of corn syrup, bring
the syrup just to a boil,
and turn off the heat.
Cover the pot with plastic
wrap and tie a long strip
of plastic wrap around the
rim to create a vacuum.
Allow the mixture to cool