How to work a crocheted coaster

In this DROPS video we show how to work a crocheted coaster
We have already worked a circle using half treble crochets as follows:
Work 4 chain stitches in colour 1 and put them together into a ring with 1 slip stitch into the 1st slip stitch.
ROUND 1: Work 2 chain stitches (= 1 half treble crochet), 9 half treble crochets around the chain stitch ring, finish with 1 slip stitch into the 2nd chain stitch at the beginning of round = 10 half treble crochets.
ROUND 2: Work 2 chain stitches (= 1 half treble crochet), 1 half treble crochet in the same stitch, 2 half treble crochets in each stitch on round, finish with 1 slip stitch into the 2nd chain stitch at the beginning of round = 20 half treble crochets.
ROUND 3: Work 2 chain stitches (= * 1 half treble crochet), 1 half treble crochet into the same stitch, 1 half treble crochet into the next stitch *, repeat this the entire round and finish with 1 slip stitch into the 2nd chain stitch at the beginning of round = 30 half treble crochets. You can also work other stitches instead of half treble crochets, for example double crochets or treble crochets.

We start the video from the 4th round.

ROUND 4: Work 5 chain stitches, pull the last chain stitch to make it long. Drop the loop, insert the needle into the next stitch, collect a new colour (colour 2) and pull it through the stitch. Work 5 chain stitches, pull the last chain stitch to make it long. Drop the loop and insert the needle into the first long chain stitch (colour 1), tighten the loop, skip the chain stitch round in colour 2 and work 1 slip stitch in the next stitch, 5 chain stitches, * pull the last chain stitch to make it long. Drop the loop and insert the needle into the other long chain stitch (colour 2), tighten the loop, skip the chain stitch round in colour 1 and work 1 slip stitch in the next stitch, 5 chain stitches, pull the last chain stitch to make it long. Drop the loop and insert the needle into the other long chain stitch (colour 1), tighten the loop, skip the chain stitch round in colour 2 and work 1 slip stitch in the next stitch, 5 chain stitches*, repeat *-* until 1 stitch remains again.
Drop the loop and insert the needle into the other long chain stitch (colour 1), tighten the loop, skip the chain stitch round in colour 2 and work 1 slip stitch in the last stitch, cut the thread (colour 1). Insert the needle into the other long chain stitch (colour 2), tighten the loop, skip the chain stitch round in colour 1 and insert needle back into the slip stitch at the beginning of round (same colour), fold the chain stitch loops backward, make a yarn over around the needle and pull the thread through the stitch on the needle. Cut the thread and pull it through the stitch. Insert the needle from the back and collect the thread, fasten the thread on the wrong side. Fasten all thread ends.

With loop:
Work from **:
1 slip stitch into last stitch, 20 chain stitches, 1 slip stitch in the same stitch, cut the thread (colour 1). Insert the needle into the long chain stitch (colour 2), tighten the loop, skip the chain stitch loop in colour 1 and insert the needle back into the slip stitch at the beginning of round (same colour), fold the chain stitch loop backward, make a yarn over around the needle and pull the thread through the stitch on the needle. Cut the thread and pull it through the stitch. Insert the needle from the back and collect the thread, fasten the thread on the wrong side. Fasten all thread ends.

We use the garn DROPS Snow in the video, the small coasters are crocheted in DROPS Muskat (hook size 4,0).