Gherkin (US: dill pickle). A tiny, sour cucumber pickled in vinegar.
Tallow. A substance consisting of a somewhat hard animal fat (esp. that obtained from the parts about the kidneys of ruminating animals, now chiefly the sheep and ox), separated by melting and clarifying from the membranes, etc., naturally mixed with it; used for making candles and soap, dressing leather, and other purposes.
Tamarind. A sour-sweet fruit, sometimes known as the Indian date, used as a souring agent. It comes in long, dry brown pods which look almost like dried broad bean pods. Inside is a long, segmented fruit, like a long brown caterpillar. Each segment contains a hard, shiny black seed. As the pods dry the fruit becomes sweeter. A visitor from Mauritius suggested shaking the tamarind and, if you could hear that the fruit had detached and was rattling a little inside the pod, you would find that the fruit was sweet. All you need to do is to remove the pod and then chew the fruit, discarding the seeds. It is also available mashed and formed into a pulpy block or as a juice. In this form it is used like lemon juice.