Tongue, Lentils & Mostarda

There isn't much else to say. Glancing over an old Anchor & Hope menu, this immediately leapt out. Needs to be made. I know why I'm losing a bit of weight. There's no western restaurant in HK that comes close to making such a tantalizingly appetizing dish like this.

ox tongue
lentils
onion
carrot
celery
thyme
sage
home-made chicken broth
parsley
tomatoes
mostarda

1. prepare the ox tongue (need specific recipe) and slice it on a machine slicer
2. prepare lentils using ingredients listed-easy on the tomatoes, add parsley last
3. serve tongue warm with lentils and mostarda