1626. Degrees of Heat Required
Flowers or aromatic plants require the smallest increase of heat beyond the temperature of the season, provided that season be genial: something more for rinds or roots, and a greater heat for fruits; but this heat must not be carried to excess.
Fools Have an Abundance of Vanity.
1627. Proportions of Heat
Philosophic confectioners may avail themselves of the thermometer; but practice forms the best guide in this case, and therefore we shall say, without speaking of degrees of Fahrenheit or Réaumur, that if the necessary heat for flowers is one, that for rinds and roots must be one and a quarter, that for fruits one and three quarters, or nearly double of what one may be above the freezing point.
1628. Hints about making Preserves
It is not generally known that boiling fruit a long time, and
skimming it well, without sugar