Horace and the Doughnut Puzzle

The Puzzle:

Horace and the Doughnut
Hungry Horace has bought a large doughnut to share with his friends at a party.

The doughnut has a hole in it as shown.

Horace has invited eight people to his house, including Greedy Graham, Fat Freda and Tiny Tina.

Fortunately, none of Horace's friends mind how much they get, as long as they get something.

How can Horace cut the doughnut into nine pieces USING AS FEW STRAIGHT CUTS AS POSSIBLE?
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