Best food for weight gain post dental surgery?

[The Bouncing Bog Trotter]

My 9 year old terrier has lost weight post dental surgery. She now has hardly any teeth so recommendations to help build her up would hugely appreciated. Thank you.

 

[Nasicus]

Royal Canin Recovery food? Soft, gentle and energy dense

 

[The Bouncing Bog Trotter]

Royal Canin Recovery food? Soft, gentle and energy dense

Thank you!