in thinking sainsburys did not explain properly re xmas beef?

[kitchensrus]

I spent over £20 on a 30 days matured taste the difference beef joint for xmas day from sainsburys. My guests in their 80s had not eaten outside their home since pre covid so i wanted it to be nice and they preferred this to turkey.

There was no mention of any cooking instructions on the outer packaging. When i opened it on xmas day i found it had to be cooked in liquid and was not the roast I expected. Googling silverside i can see that all silverside is recommended to be cooked this way otherwise it is tough but i had no idea. All the silverside joints were mixed in the cabinet with rump joints as each was individually priced. I never even considered there would be a difference and as it was such an expensive joint I just presumed it was a a traditional roast. It was labelled "British beef silverside joint".

AIBU to think Sainsburys should have explained this on the packaging as surely I am not the only person who doesnt know this. I wouldnt normally have beef except for the visitors.

i rarely follow instructions for meat - always cook it for longer that it says

That’s great if you want overcooked meat.

@Lockheart

I've never cooked silverside in liquid in my life. It's an excellent roasting joint.

This...

(Never heard of cooking it in liquid)

@LittleBearPad

We’d balance one another out. I always cook it for less!

Same!

I am a firm believer in just wack it in the oven. Works every time.... cooked gammon, beef, turkey and leg of lamb Christmas Day.
Just bung it in and hope for the best. No dramas yet :)