1. Preheat Oven and Prepare Muffin Tin: Preheat your oven to 350°F (175°C). Line a 12-cup muffin tin with cupcake liners. This ensures easy removal and clean-up and gives the cupcakes a professional look.
2. Combine Dry Ingredients: In a large bowl, whisk together the all-purpose flour, granulated sugar, baking powder, and salt. Whisking ensures the baking powder is evenly distributed, leading to a consistent rise. This step pre-mixes the dry components, simplifying the later stages.
3. Cream Butter and Sugar: In a separate large bowl or the bowl of a stand mixer fitted with the paddle attachment, cream together the softened butter and granulated sugar until light and fluffy. This process incorporates air into the butter and sugar mixture, which is crucial for a light and airy cupcake. Beat for 2-3 minutes until the mixture is pale yellow and noticeably lighter.
4. Incorporate Eggs: Beat in the eggs one at a time, mixing well after each addition. Ensure each egg is fully incorporated before adding the next to maintain a smooth batter. This step emulsifies the eggs into the butter and sugar, contributing to the structure of the cupcakes.
5. Combine Wet Ingredients: In a separate small bowl, whisk together the whole milk, lemon zest, lemon juice, and vanilla extract. Combining wet ingredients separately ensures they are evenly distributed when added to the dry ingredients. The lemon zest and juice are added to the milk to infuse it with lemon flavor.
6. Alternate Wet and Dry Ingredients: Gradually add the wet ingredients to the creamed butter mixture, alternating with the dry ingredients. Begin and end with the dry ingredients, adding in three additions. Start by adding about one-third of the dry ingredients to the wet mixture and mix until just combined. Then, add half of the wet ingredients and mix until just combined. Repeat with another third of the dry ingredients, followed by the remaining wet ingredients, and finally, the last third of the dry ingredients. Mix until just combined after each addition. Be careful not to overmix. Overmixing can develop gluten, resulting in tough cupcakes. Mix only until the ingredients are just incorporated and no streaks of flour remain.
7. Fill Cupcake Liners: Divide the batter evenly among the prepared cupcake liners, filling each about two-thirds full. Using an ice cream scoop or a measuring cup can help ensure consistent sizing and even baking.
8. Bake: Bake in the preheated oven for 18-20 minutes, or until a toothpick inserted into the center comes out clean. Baking time can vary slightly depending on your oven. Start checking for doneness around 18 minutes. The cupcakes should be lightly golden and spring back gently when touched.
9. Cool Completely: Remove the muffin tin from the oven and let the cupcakes cool in the tin for a few minutes before transferring them to a wire rack to cool completely. Cooling completely is essential before frosting to prevent the frosting from melting.

Making the Lemon Blossom Frosting:

1. Cream Butter: In a large bowl or the bowl of a stand mixer fitted with the paddle attachment, cream the softened butter until smooth and creamy. This step ensures a smooth base for the frosting.
2. Gradually Add Powdered Sugar: Gradually add the powdered sugar, one cup at a time, beating on low speed until combined. Adding powdered sugar gradually prevents it from creating a cloud of dust and ensures it incorporates smoothly into the butter. Increase speed to medium-high and beat until light and fluffy, about 2-3 minutes.
3. Add Lemon Juice and Flavorings: Add the lemon juice, and optional lemon extract and floral extract (if using). Beat until well combined and the frosting is smooth and creamy. Taste and adjust the lemon juice and extracts to your preference.
4. Adjust Consistency: If the frosting is too thick, add heavy cream, one tablespoon at a time, until you reach your desired consistency. If it’s too thin, add more powdered sugar, a tablespoon at a time. The frosting should be pipeable but still hold its shape.
5. Frost Cupcakes: Once the cupcakes are completely cool, frost them with the lemon blossom frosting. You can use a knife, spatula, or piping bag to frost the cupcakes. For a decorative swirl, use a piping bag fitted with a star tip.
6. Decorate with Edible Flowers: Gently place edible flowers on top of the frosting to decorate each cupcake. Choose flowers that are appropriately sized for cupcakes and arrange them aesthetically. Ensure the flowers are fresh and pesticide-free.