1. thoroughly mix and screen the gellan gum, sugar, starch, titanium dioxide, sodium hexametaphosphate, xanthan gum, and color together. 2. blend lemon juice powder, salt, citric acid, and calcium chloride, and set aside. 3. add blend from step 1 to water under shear in steam-jacketed kettle. 4. heat slurry to 190 F and bold for 5 min to cook out starch. 5. add blend from step 2 and mix until thoroughly dispersed. 6. remove from heat and pour into precooked pie shell, cool, and refrigerate.