Put a loaf pan in the freezer to chill.
Crush peppermint with a food processor or coffee grinder.
Using an electric mixer beat heavy cream until stiff peaks.
Mix in condensed milk a half cup at a time, mixing well in between additions.
Add vanilla extract and crushed peppermint and mix until well combined.
Pour into chilled loaf pan, cover, and place in the freezer.
Freeze for at least five hours or overnight.