Galangal. The rhizome of a plant of the ginger family, although it is smaller and more shrivelled. It has more translucent, flesh-coloured skin than the rhizome of ginger. It is peeled and grated or thinly sliced and used in the same way that fresh ginger is used, but has a slightly more complex flavour reminiscent of camphor. Greater galangal resembles a cross between ginger and pepper; lesser galangal is more pungent, with cardamom and eucalyptus flavours, whilst kempferia is the strongest.
Guava. A fruit with the external appearance of an apple or pear. The large, pale, yellow-skinned, pear-shaped ones are the best. They have a very strong smell.
Pistachio nut. The fruits of a small tree which originated in Central Asia, probably eastern Syria, but which is now widely cultivated. Just before harvest pistachios are enclosed in a green and magenta fleshy cover. These are the very best, if you can get them. However, fresh pistachios are rarely seen, mainly because they have a short shelf-life. They are usually hulled and dried, after which they are either roasted or roasted and salted. For cooking use the ones which are not already salted. They are sold in their creamy beige shells, which split as they ripen. The shells should be removed and the purple papery skins rubbed off revealing the bright green kernels within, the greener the better. They are related to both the cashew and the mango.
Water amaranth or sessile joyweed. A type of amaranth which grows vigorously, providing nutritious greens. Use only tender new shoots as old leaves can leave a bitter taste in the mouth.