In the 21st century, countries generally use grams and kilograms for measurement units.
However, the concept of 'gram' was actually only proposed in 1795, when it was defined in Gaul as "the absolute weight of a volume of water equal to a cubic decimeter at the melting point of ice."
Therefore, in the seventeenth century, the United Kingdom was still using the common system, which included drams, ounces, pounds, etc.
The common system differs from the troy system, wherein an ounce is approximately 28.3495 grams, whereas the latter is 31.1034768 grams.
By converting through the former, the ten ounces Xu Yun mentioned is just over 280 grams, roughly half a kilogram.
As mentioned earlier.
The main cost of homemade tomato ketchup lies in sugar, as a pound of tomato ketchup needs about 30 grams of sugar, which translates to approximately 18 ounces corresponding to 30 grams of sugar.
