Recently, I visited four and twenty blackbirds a pie shop in the Park Slope/ Sunset Park area of Brooklyn. They sell handmade pies and pastries. With interesting names like chess pie and grapefruit custard, it was difficult to choose. I settled on the salted caramel apple pie. It was so good I almost wanted to get another one but thought better of it. Instead I bought one for my sister and a grapefruit custard for me to share with my…