MACERATE THE STRAWBERRIES: Combine the strawberries, 1/4 cup of sugar, and lemon juice in a medium bowl. Stir well and let sit for 20-30 minutes until the berries release their juices and soften.
MASH OR BLEND: Use a fork to mash the strawberries to your preferred texture. For a smoother ice cream, blend half with an immersion blender. Set aside.
WHIP THE CREAM: In a large, chilled bowl, beat the cold heavy cream with a hand or stand mixer until stiff peaks form, about 3-4 minutes. Do not over-whip.
MAKE THE BASE: In a separate bowl, whisk together the sweetened condensed milk, remaining 1/2 cup sugar, vanilla extract, and salt until combined.
FOLD IN STRAWBERRIES: Stir the mashed strawberry mixture into the condensed milk base until evenly combined.
COMBINE: Gently fold the whipped cream into the strawberry base in three additions using a rubber spatula. Work slowly to preserve the air and keep the mixture fluffy.
FREEZE: Pour the mixture into your loaf pan. Press plastic wrap directly against the surface to prevent ice crystals. Cover tightly with a lid or additional plastic wrap.
SET: Freeze for at least 6 hours, or ideally overnight, until completely firm.
SERVE: Remove from freezer 5-8 minutes before scooping. Scoop, serve, and enjoy!