Cut the bottoms of the strawberry flat to get them to stand upright. When you do so, make sure that you do not cut off so much that there is a hole at the bottom.
Use a huller, apple corer, or paring knife to carefully remove the fruit from inside the strawberry.
In a medium bowl add tequila and fresh squeezed juices. Sprinkle geletin over the top. Heat water in a microwave until boiling, add sugar and whisk a few times. Pour hot sugar water into the tequila and add Grand Marnier and a small pinch of salt.
Whisk the mixture until gelatin dissolves (I whisked for about 3 minutes). If gelatin is not dissolving, heat briefly (start at 30 seconds) in the microwave, being careful not to allow mixture to boil and continue whisking. The sugar will also dissolve. Pour the mixture into a 1 cup glass measuring cup and slowly pour into the center of each strawberry. Cover and refrigerate for at least 3 hours.
Once the strawberries have been emptied, use a clean kitchen towel or paper towels to pat the outside of the strawberries dry.
Check each strawberry and make sure there is not a hole in the bottom before you start filling.