Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make paleo coffee brownies [title] Melt the chocolate chips in a saucepan over low heat. [step] Pour in coconut oil and shortening. Stir continuously until smoothly blended and totally melted.

Ending1: [title] Place about 3 and a half cups granulated sugar, one cup cocoa and 1 tablespoon of butter in a medium sized saucepan and bring to the boil. [step] Use a high-powered stove to carefully boil the mixture. Ending2: [title] Place 1/3 of the brownie mix into a piping bag. [step] Continue piping hot over a low to medium temperature (around 140 ° f or 75 ° c). Ending3: [title] Strain and cool the chocolate chip mix completely. [step] Allow to cool completely on a glass plate. Ending4: [substeps] Afterwards, preheat the oven to 350 ° f. [title] Add the instant coffee/ground espresso beans.

Answer format: ending1/ending2/ending3/ending4