Start by pouring the 8 cups of whole milk into your Instant Pot. Press the "Yogurt" button and then "Adjust" until it displays the "Boil" setting.
Once the milk reaches a boil, carefully stir in the 1/3 cup of fresh lemon juice or the 3/4 teaspoon of citric acid. Stir gently for about 30 seconds, then turn off the Instant Pot. Allow the mixture to sit undisturbed for 10 minutes.
Place the fine mesh strainer over a large mixing bowl and line it with a coffee filter or cheesecloth. Pour the curds and whey into the strainer. Let it drain for about 5-10 minutes.
Once drained, transfer the ricotta to a mixing bowl. Add salt, ground black pepper, and any herbs you desire. Mix gently until well combined. Drizzle a bit of olive oil on top.
Your homemade ricotta is now ready to be used! Spread it on toast, mix it into pasta, or enjoy it in any of your favorite recipes.