In the text, we can see the extended 's' that was used in the 1700's, looking more like an f without the line going through it. This shows how the symbol and letter has been developed through time, and could be a result of roman influence in the 1700's and then as more and more immigration occurred, more influences adapted the way we right now.
There is also a capital letter before random nouns and some verbs that wouldn't be used nowadays. There wouldn't be much reason for this apart from the fact that they hadn't distinguished the difference between proper nouns and concrete nouns, or they had different and more vague/lenient rules of how the English language and grammar worked in the 18th century.
Graphologically, the type face is italics. This would maybe be associated to female preference, and would be associated to the fact that in this era, it was only women that would do the cooking, whilst the men would be out working. Compare this to a modern day recipe or cook book, and we would maybe see a more casual, unisex font, that is also more colloquial too.