Your other option is to bookmark with the ingredient name such as blackberries - this means when you are searching for that fruit you will see the recipes you have previously noted. It is easier to find the ones you liked rather than going through all your blackberry recipes in your entire cookbook collection.
But that could get unwieldy if there are a lot of seasonal ingredients you want to note. So an easier way is to Bookmark all such recipes as Do Later then when you search, select that bookmark plus the ingredient you are interested in. As always, it is better to select the ingredient from the Only Show filters as that is then a precise ingredient search not a word search. So in this case you would select Ingredients / Fruit / Berries / Blackberries.