Mix together milk and vinegar and set aside.
In a large bowl mix together flour, baking soda and salt. Set aside.
In a separate bowl whisk together milk, eggs, lemon, lemon zest, lemon juice, and ricotta cheese until smooth.
Add wet ingredients to dry ingredients and mix until just combined.
Pour batter by ¼ cup full on to hot griddle. Cook until both sides are lightly brown.