In another series somebody was forced to revise their very low scores as it was obvious she was voting very low in order to win.
This Tanya is not so obvious, giving 5 for everyone, but it will have the same effect.
I hate the way she screws her face in to a cat's backside just at the sight of the food, before she's even tasted it.
The one cooking tonight is also tactically voting - he enjoys the meal, but finds picky non-existent reasons to give a low score. It was garlic flavoured strawberries last night, which nobody else commented on.