Disclaimer. I can cook. Apart from two things which are always awful. Homemade curry. And gravy. And I'd love a good gravy for Christmas dinner.
I've tried Jamie's gravy (all those chicken wings what a bloody faff) and it was nothing more than ok. Tried shop bought from Cook, and it got binned it was so bad. Tried a Mary Berry one which called for cranberry jelly or something like that and it was wincingly sweet. And packet gravy, well, is packet gravy... although my best efforts have used this as a base, and added veg water and meat juices. Still really meh.
Let me into the secret please!