Tree identification please

[Maggi Young]

Wow!  those  do look like the  "fruits" on Gail's photo. They  do look "fruitish"  rather  than the  type of gall we see more  usually - but I think you  may have  cracked that one, Giles!

[Giles]

They are called currant galls, caused by parasitisation of the male catkin.

[Karaba]

For those who want to know a bit more : https://www.naturespot.org.uk/species/spangle-gall-wasp or in french : https://www.insectes-net.fr/galles/galle4.htm

[Gail]

Well, that is amazing! Not sure what Neil will say when I tell him he was tasting a gall...

The tree was covered in them.

[Ali Baba]

  splendid!

[Maggi Young]

Well, that is amazing! Not sure what Neil will say when I tell him he was tasting a gall...

The tree was covered in them.

Maybe there are  some things  it  is  better  not to know??

[Véronique Macrelle]

in fact on the last picture, it looks like a Oak. we do not see fruit, but red female flowers, which resemble those of an oak and clusters of green male flowers.
 

maybe Quercus pubescent?