01 -
Preheat your oven to 175°C (350°F). Grease and line a 9x5-inch loaf pan.
02 -
In a large bowl, cream the butter and sugar together until light and fluffy.
03 -
Beat in the eggs, one at a time, then add the lemon juice and lemon zest.
04 -
In a separate bowl, whisk together the flour, baking powder, baking soda, and salt.
05 -
Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Stir in the sour cream or yogurt until the batter is smooth.
06 -
Gently fold in the diced rhubarb.
07 -
Pour the batter into the prepared loaf pan and spread evenly.
08 -
Bake for 50–60 minutes, or until a toothpick inserted into the center comes out clean.
09 -
Allow the loaf to cool completely in the pan for about 10 minutes, then transfer to a wire rack to cool fully.
10 -
To make the glaze, whisk together powdered sugar and lemon juice until smooth. Add rhubarb syrup for color if using.
11 -
Drizzle the glaze over the cooled loaf. Slice and serve.