cream butter and brown sugar
Add eggs and mix thoroughly
alternate between adding a bit of flour (mix) then a bit of milk (mix). Add until all used up.
Add lemon juice and mix. Add Vanilla and mix. Add baking soda and mix
Chop rhubarb and add to mix.
Add frozen raspberries to mix (break them up if stuck together).
Line a baking dish with grease proof paper and pour in mixture.
Bake for 40 - 45 mins in 180C oven. Centre should be soft (but not sloppy), with a little bit of mixture sticking to knife placed in middle.
Serve with fresh cream.