The traditional "mincemeat" for mince pies over here doesn't really contain meat - except for shredded suet, which is the hard fat found around the loins and kidneys of beef or mutton. It is basically a sweet mixture of grated apple, raisins, currants, mixed citrus peel, dark brown sugar, suet, lemon juice, nutmeg and brandy.
Recipe: https://www.bbcgoodfood.com/recipes/traditional-mincemeat
I have made my own in the past, but nowadays tend to just buy it ready made. The jar I am using at present has vegetable suet in it rather than animal suet. That wasn't a conscious decision on my part - indeed I have only just spotted it is using vegetable suet when I just looked at the ingredients on the label. To be honest, I can't taste any difference between the two - at least not when it is mixed with all the other ingredients.