liquid I actually found it hard to find lear guidelines because you basically get a list that says no fatty food, no salty food, no processed food, no caffeine, everything organic (pretty hardcore!) but once you dig around for what is actually banned it's pretty reasonable.
No unpasteurised cheese at all, not even hard cheese
Unwashed salad and uncooked bean sprouts
No baked goods with filling that contains egg as the filling might not be cooked properly
No alcohol
No freshly squeezed juice from counters/supermarkets
No dark chocolate or cocoa (
), no regular tea, no coffee, no energy drinks
No liver in first trimester, no carpaccio or tartare, no parma ham or serrano, no salami (so no cured meats, I guess), no medium/rare meat
No raw fish, sushi, pickled herring, cold smoked fish
No stevia (oops, I've ignored that one), or saccharin
No raw/soft eggs, no food from 'open counters' (e.g. olives from the deli counter)
I think the NHS says cured ham and salami is ok so, again, I mix and match. All those guidelines also don't say 'total verboten', they all just say 'best to avoid'.