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Knotted Kernel
type: Cider
identification: Small to medium size, conic with ribbed faces. The skin is smooth and waxy, base colour yellow, washed red over almost the entire surface, over which are darker stripes and marked with light-coloured lenticels. The stem is slender and woody, very long, set in a medium deep cavity which is russetted. The calyx is closed and set in a shallow, narrow, puckered basin.
characteristics: The flesh is cream coloured, dyed red next to the skin. Soft, sweet with moderate bitterness. Crops poorly for the first 10 to 12 years.
uses: Cider. Can stand as a single vintage varietal.
origins: A Somerset (U.K.) cider apple listed in the London Horticultural Society's 1842 catalogue, but thought to have disappeared in the course of the years. Fortunately, it resurfaced in New Zealand where it was found among several cider varieties grown by an orchardist who had emigrated from Britain during the 1960s. Scionwood of the Knotted Kernel and several other forgotten varieties were sent to the Brentwood Fruit Trees in Buckinghamshire (U.K.) in 2006 by D. Trevor Fitzjohn, a radiologist who had emigrated to New Zealand in 1986 and was an avid collector of cider apple varieties.
cultivation: Moderately vigorous. A large tree at maturity. Hardy.
cold storage: Best used within two weeks of harvest.
harvest: Ready to be picked late in the fifth period. Specific gravity 1.059, acidity 0.24 and tannin 0.34.
notes: Described by Robert Hogg in "The Apple and Pear as Vintage Fruits" published 1889, noting that "The tree is very hardy and bears well and the deep colour of the fruit makes it popular."
juice character: Bittersweet with soft tannins. Excellent quality.
juice_classification: Medium bitter sweet
ploidism: Diploid. Self sterile.
cold storage weeks: 2
tannins: 3.4
acidity: 2.4
harvest period: 5
sg: 1.059
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