I know it's been a while since my original post, and the beer is now long gone, but here are some notes on the beer.
1)The passion fruit extract overpowered the cucumber. I used slightly less than the amount recommended by the manufacturer, but it was still too much.
2)The cucumber flavor was slight, and not just because of the overwhelming passion fruit flavor, but because I don't think I added enough. I made an extract with vodka, about 1 cup of vodka, and eventhough it tasted great, it wasn't enough to flavor the beer. I ended up just "dryhopping" about two pounds of sliced cucumber in the secondary. Maybe 5 or even 10 pounds of crushed cucumber would have been better.
3)My first sip of the beer made me think of cough syrup. I think this was the fault of the artifical passion fruit flavor. I will now avoid artifical flavors at all costs. I recently found a Passion Fruit juice in the ethnic isle of my grocery store. I think its made in Mexico. Eventhough its only 20 or 30% juice, it doesn't contain any artificial flavors.
4)Overall the beer was drinkable and, dare I say, even enjoyable despite its shortcomings. I'd definitely have to make some improvements though before I made this again.