The last few days I've gone to Cafe Metro to get a salad for lunch. Hopefully someone out there is familiar with them. There is a salad bar where you choose what you want, but the guys there make it for you. Even if I ask for a *little* of something, they just throw in whatever. So here's what I got today:

"Regular" size spinach - about 2 cups, I think
Tangerine slices, apples - "handful" of each
Walnuts and feta cheese - again, a "handful" of each, or even less
Balsamic vinegar - my guess is that it couldn't be more than 2 tablespoons

Has anyone ever gone to Cafe Metro or somewhere similar? Maybe someone else has a better of estimate of how much stuff they actually put in. I hate not knowing exactly how much I'm eating but I haven't had time to pack lunches this week.

The measurements of "handful" would depend on the size of the hand. The difference could be pretty big, especially with the nuts.

The spinach is about 20 calories.
The dressing I use and it should be 60 calories.

Hum..I am not familiar with the restaurant but I can maybe give you a ballpark guess. As Jigglefree mentioned, it really depends on the size of a "handful. Would you say half a cup or a quarter cup each?
I use feta and balsamic vinegar every day. They are two of my favorites.

Balsamic: If it was just the vinegar with no oil then it is 15 calories per Tbsp. If it is an oil dressing, then it would be 30-40 cals per Tbsp.

Jigglefree mentioned the spinach

Feta: Regular feta is 90 calories per 30 grams which is a little less than 1/4 cup crumbled. light feta is 60-70 calories per 30 grams. A small handful will probably be about a serving and a half or 135 calories where a medium handful could be close to 180. Cheeses can add up fast!

walnuts: 1/4 cup or a small handful is about 170 - 190 calories.

Tangerines are about 28 calories each

A medium apple is about 45 calories.

You can take it from there and decide the amounts that were added to your salad
I hope that is helpful