
* I used European butter to develop this recipe because it is the best kind of butter to use for shortbread (it has a lower moisture/higher fat composition). If you don’t have access to European butter (e.g., Kerrygold), you can use standard US butter instead, but your shortbread might be a bit tougher and crumblier and may spread more.
** If you’d rather go with the sliced log method, shape into a log in the parchment paper this way. Despite the title of the article I just linked to, it will never be perfectly round if you go with the log method. But it works well. Instead of stamping out circles, just chill the log completely and then slice off 3/4-inch rounds.
*** I used a 2 1/4 in [57 mm] round to test this recipe—if yours are smaller or larger you may need to adjust the bake time slightly. Also shorten the bake time if you roll yours out thinner than the recipe suggests. If you’re not using a ruler, I highly recommend keeping a close eye on them so they don’t get too toasty.
**** If they have lost their chill, move them to the freezer for a few minutes before baking. They should be solid when they go in the oven, or they will spread and thin out.
***** Shortbread is the kind of thing that tastes really weird right out of the oven and really good after cooling. They should have a crunchy texture once cooled, but they’ll taste oddly dry, mealy, and crumbly while still cooling down. Shortbread is not like a chocolate chip cookie, which is perfect and gooey right out of the oven. Give them a few minutes before taking a bite (or at least before making up your mind).
Find it online: https://cardamomandtea.com/92808/earl-grey-shortbread/