I'm going to sound like a right picky sod but Dals aren't allowed gravy because of the purines

It would probably work with chicken stock though

Try the easy chews https://www.antlerdogchews.co.uk/ind...tegory&path=43 rather than the Stagbar, might keep her interest a bit longer.

I put marmite on the stagbars for mine, although they give up once it's licked off. Mine are little dogs though. I may try antlerdogchews next as they look more manageable for them.

What do take mine a while to get through and they like are pig skin ears (not pigs ears). I get them in wilkinsons & they also do a pig skin bone shaped chew.

I get tiny Bella the biggest size of everything! She holds them upright between her paws. The tiny ones for small dogs just didn't last long enough. She keeps these big ones longer and is quite possessive about them.

I bought her a large Jumbone and she demolished it! She is a real gnawer.

Perhaps try the sawn in half stag bars?
Or stuffed hooves
Stuffed marrowbones
Rawhide (I know it can be controv but does last a while!)
You can buy HUUUUGE pork rolls
Treat ball, tug a jug
Pizzle (last Kestral 20-25mins)
Ribs (spent 35 mins to start but has been back to it since)

Ditto!!
The boys have the extra large Antlers lol

Are nylabones not an option? Bailiie has two in the car for all journeys and does chew them when not sleeping I do give her the bigger ones even though she's only small though...

Ted occasionally has the dehydrated pig trotters and they seem to last him about 45mins sometimes a bit longer. Otherwise as he is not a big chewer its a frozen kong.

I do like the look of the pig trotters, I've seen some on Mutley Chews and they have a little chew rating and they've put them as hard
http://www.mutleychews.co.uk/products/bulk/

I might try the stag bar/antler chew first though as it works out cheaper, and if not then try the trotters.

Beef scalp from zooplus is the best thing I've found so far, but God do they stink! So perhaps not ideal for the car?