This tart was amazingly good! I made it for the crowd I feed at the barn, and it was devoured quickly... always a sign that it's a hit :) I used what I had in the house, so it was frozen strawberries, raspberries, and blueberries. I thawed them, drained all the juice off into the saucepan to simmer with the marmalade. I didn't have berry liqueur, but had Midori, so I used that... and reduced it all to 3 Tbsp. It was beautiful when I first put the berries on, but it soon bled on the mascarpone, and didn't look as pretty. Next time I will add the berries just prior to serving. The mascarpone cream was delicious with the berries! definitely will do again! (next time with fresh berries)