I made this tart for the first time: https://www.taste.com.au/recipes/mango-passionfruit-australia-day-tart-recipe/xr2rx1q4?r=recipes/australiaday&c=9336f356-56fb-44e5-8053-e711fe431650/Australia%20day
It was delicious, but I could not get the mango filling to solidify much. It was way too runny.
I’m guessing the problem lies with where I was cooking the mango purée mixture on the stove. The recipe says 6-8 minutes on medium-low heat until it thickens. Mine didn’t thicken even after 10 minutes. So I guess it’s no surprise it was runny even after cooling.
I have no idea how to make it harden, this recipe has no flour or cornstarch. Do I keep cooking until it thickens or will that be counterproductive? Do you cook on higher heat? Do I add something?
Kind regards,
Elle
Best Answer
Welcome to the site Elle! This tart filling is a custard as the thickening agent is egg yolks. If it isn't thickening up enough then one of two things is happening:
I would first try gently cooking down the mango a bit to thicken it up before adding the eggs. This takes more time as you'd have to cool the mixture before adding your eggs to it so they don't scramble and ruin it, it will also intensify the flavor. If you don't want to do that then add another egg yolk, or use larger eggs. Then I'd use a candy thermometer to monitor the temperature to make sure it gets to the target. It should thicken up noticeably when it gets there. If it still doesn't add small amounts of cornstarch slurry (mix with a bit of your extra cream), holding the temperature there until it thickens up. Don't go overboard or you'll have too hard a filling when it cools!