88. In addition to grapefruit, lemons, and oranges, the three principal
varieties of citrus fruits, this group also includes kumquats, limes,
mandarins, and tangerines. These fruits are not of so much importance in
the diet as the other varieties, but when they are used as foods they
have a food value about equal to that of apples the same in size. They
are not in such common use as the citrus fruits already discussed, but
it is well for every housewife to know what they are and to what use
they can be put.
89. KUMQUATS are an acid fruit resembling oranges in color but being
about the size and shape of small plums. They are used principally for
the making of marmalades and jams, and in this use both the skin and the
pulp are included.
90. LIMES look like small lemons. They are very sour and do not contain
sugar in any quantity. They are valued chiefly for their juice, which is
utilized in the making of drinks, confections, etc.
91. MANDARINS and TANGERINES are really varieties of oranges and are
used in much the same way. They have a very sweet flavor. Their skin
does not cling so closely as the skin of oranges. For this reason they
are known as _glove oranges_ and are very easily peeled.
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