This little yellow fruit, also known as a loquat and as a Japanese medlar, is an extreme rarity back in London, though V and I have located a nisperal at the back of the Fellows' Garden at the Royal Observatory in Greenwich.
It was originally native to South-eastern China.
The pips look a bit like roasted coffee beans.
Here in La Antigua, the nisperales of San Juan de Obispo, up on the faldas of the volcano, are said to give the most succulent fruit. Their pears are great too.