Is salad/pasta from the Morrisons salad/pasta bar really a s

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Whenever I eat pasta or salad I always automatically think it's better than anything else. How much calories is in it, with all the mayo & things. I'd like to know how much approx a medium box contains. It's quite scary to think I'm putting something my mouth out knowing how many cals are in them. I've always seen it as a 'safe' food though just because it's not junk food.