|Sugar||1 Cup (16 tbs)|
|Plum juice||1⁄2 Cup (8 tbs)|
|Plums||1 Cup (16 tbs), chopped|
Combine sugar and flour in saucepan.
Add eggs and plum juice; mix well.
Add plums and salt; bring to a slow boil.
Cook until mixture is of spreading consistency.
Remove from heat.
Add butter; beat until cool enough to spread.
Frost cooled cake.