In a saucepan, bring cream to a gentle simmer over medium heat. When it reaches 185°F (85°C), add lemon juice, stir, and gently simmer for another minute. (It will not seem thick, and that’s ok.)
Let cool at room temperature for around 15 minutes.
Line strainer with a cheesecloth, place it over a bowl and pour the cream in. Let cool another 15 minutes, then refrigerate overnight to let any liquid drain.
Transfer to a bowl, stir with a fork and refrigerate in an airtight container. Keeps well for about 3 days.