01 - Line an 8-inch square baking pan with parchment paper, leaving an overhang on opposite sides for easy removal later.
02 - Combine heavy cream and instant coffee granules in a small saucepan over low heat. Stir continuously until coffee completely dissolves. Remove from heat and let cool for 2 minutes.
03 - Place chocolate chips, sweetened condensed milk, and butter in a large microwave-safe bowl. Microwave in 30-second intervals, stirring thoroughly after each burst, until mixture is completely melted and smooth, approximately 1½ to 2 minutes total.
04 - Pour the cooled coffee cream into the melted chocolate mixture. Add vanilla extract, almond extract, and salt. Stir until fully incorporated and smooth. Fold in chopped nuts if desired.
05 - Transfer the fudge mixture to the prepared pan. Use a spatula to spread evenly and create a smooth surface. Tap pan gently on counter to release any air bubbles.
06 - Refrigerate for at least 2 hours until completely firm. Lift fudge from pan using parchment paper overhang. Cut into 36 equal squares. Store in airtight container in refrigerator for up to 1 week.