

Was that lamb properly cleaned? Sheep and goat have glands throughout the body that need to be removed in order to make the meat more palatable; it’s still edible, just unpleaseant and smelly.
I personally prefer adult sheep or goat. The meat is very though and oily but slowly roasted, with strong herbs, it breaks down and becomes tender. The fat in the meat is superb to cook root vegetables in.
Nothing against horse; unusual nowadays but it helped a relative of mine to ward off a serious malnutrition, leading to low blood iron levels. Game meats are game meats. I personally enjoy boar but not being a hunter makes it hard to source such meats.
Under pressure for what?
It has already been stated that the import of food items, in detriment of the higher EU food standards, will not be negotiable.
Two simple examples: chicken and beef.
For beef, it would be as simple as stop pumping cattle with steroids and attest the origin of the animal, two things american rancher are unwilling and often unable to do. Argentina and Brasil sell meat to the EU. Isn’t the US as capable?
Stop washing chicken with chemicals (likewise, eggs), treat the animals properly, with good sanitary conditions, no steroids, and it will be fine.
But the real issue is that the EU already produces enough beef and chicken indoors. And meat consumption has been in a sharp decline. No one will buy what they don’t.
Besides these two, it would make a difference if the US stopped using artificial food colorings, with proven bad effects on health.
There are more issues.