Wash, hull and crush strawberries, one layer at a time. Measure 1 cup (250 ml); set aside.
Peel and crush kiwifruit, one layer at a time. Measure ½ cup (125 ml).
Combine prepared strawberries, kiwifruit and sugar into a large bowl. Mix well; let stand 10 minutes.
Stir in liquid pectin. Add lemon juice. Continue stirring for 3 minutes.
Ladle jam into a hot, sterilized jar to within ¼ inch (0.5 cm) of top rim (headspace). Using non-metallic utensil, remove air bubbles. Wipe jar rim removing any stickiness. Centre SNAP lid on jar; apply screw band securely until fingertip tight. Do not over-tighten. Place jar in canner. Repeat for remaining jam.
Let stand in refrigerator until set. Freeze within 24 hours for long term storage.
Store in freezer up to 1 year or in refrigerator up to 3 weeks.